Item Price Tracker, Austin TX (USD), 5 Oct 2026: 990 Pro at $385.99 to $389.99, 4090 FE only via 3P at $4,440+, Aeron B thin

Interpretation: "Austin TX" sets the market. Texas sales tax is applied as an 8.25% assumption (estimate, not read from any seller checkout; sellers show tax only at checkout). Amazon pages were fetched with non-Austin delivery ZIPs (Connecticut for the 990 Pro, Texas Gulf Coast for the 4090, Pennsylvania for the Aeron), so delivery dates are indicative. "Aeron size B" is read as a new Aeron chair in size B, and Classic and current-generation listings are labeled separately. This is a first run, so no prior edition exists; the one change found comes from an aggregator's dated log. All pages were accessed 5 Oct 2026.

Tracker table

Item	Seller	Price	Total landed cost (est., +8.25% TX tax)	Stock/availability	Lead time	Key terms	Change since last run	Flag	Source link
RTX 4090 Founders Edition (MPN 900-1G136-2530-000, per rtx.live; the Amazon title reads "VIPERA NVIDIA GeForce RTX 4090 Founders Edition")	Amazon (3P marketplace, DG's Vault)	$4,440.00	$4,806.30	Low stock (only 1 left)	Delivery 8 to 13 Oct	New, free delivery; a Used-Like New offer from SunnySummit is $3,400.00 + $9.99	▼ −$55 (Amazon listing $4,495 two days earlier to $4,440, per rtx.live log; aggregator, single source)	price spike vs $1,999 MSRP, scam risk (3P, far above MSRP)	Amazon, 5 Oct 2026
RTX 4090 Founders Edition	Newegg (3P marketplace, Tech Trends)	$4,649.00	$5,032.54 (free shipping)	In stock	not found	Condition not stated by rtx.live; Newegg-labeled refurbished unit $2,112.10 + $12 ship is out of stock	no change visible (Newegg $4,649 logged 4 days earlier)	price spike	rtx.live, 5 Oct 2026 (aggregator lead; Newegg page not opened)
RTX 4090 Founders Edition	B&H Photo	not found	not found	Discontinued (B&H shows other 4090 models as "No Longer Available"; no FE listing returned)	not found	search for "nvidia rtx 4090 founders edition" returned no exact match	first run	EOL	B&H search, 5 Oct 2026
RTX 4090 Founders Edition	Micro Center	not found	not found	not found	not found	search "rtx 4090" returned 8 results, none a 4090 card (graphics cards listed are RTX 5000 series)	first run	EOL	Micro Center search, 5 Oct 2026
Samsung 990 Pro 2TB NVMe, MZ-V9P2T0B/AM (no heatsink)	Amazon (sold by Amazon.com)	$389.99	$422.16	In stock	Free delivery Sat 10 Oct (Prime: Tue 6 Oct, to a CT ZIP)	New; Amazon Resale "Used - Very Good" $360.88	first run	—	Amazon, 5 Oct 2026
Samsung 990 Pro 2TB, MZ-V9P2T0B/AM	B&H Photo	$389.99 (was $639.99)	$422.16	In stock	Free Next Day Shipping; express store pickup	New; 6-month Payboo promo financing offered	first run	—	B&H, 5 Oct 2026
Samsung 990 Pro 2TB, MZ-V9P2T0B/AM	Newegg (seller not confirmed)	$385.99 (listing start price, "more options $385.99 to $740.84")	$417.83 (shipping not shown on listing)	Listed (stock on product page not opened)	not found	New; separate Newegg search-result listings include Refurbished at $455 and Used at $504.40	first run	best offer (unconfirmed seller)	Newegg, 5 Oct 2026
Samsung 990 Pro 2TB	Micro Center	not found	not found	not found	not found	search returned one Samsung product, a 990 2TB (non-Pro); no 990 Pro 2TB seen	first run	—	Micro Center search, 5 Oct 2026
Herman Miller Aeron size B	Amazon (3P marketplace, Office Logix Shop), Classic Aeron	$649.00	$702.54 (free shipping)	Low stock (12 left)	Get it 14 to 16 Oct	Classic model; the page's item details read "Renewed Classic Aeron", so the unit is likely renewed; "New & Used (8) from $649.00"	first run	scam risk (3P, likely renewed)	Amazon, 5 Oct 2026
Herman Miller Aeron size B	Amazon, newer-model listing (Graphite)	$1,649.99 (shown in "newer model" panel; its own page not opened)	$1,786.11	"Usually ships within 6 to 7 days"	6 to 7 days	seller not stated	first run	—	Amazon panel, 5 Oct 2026
Herman Miller Aeron size B	Newegg (3P, sellers not identified)	$649.99 to $924.99 across 5 size-B chair listings (for example $649.99 armless, $799.99 polished base, $924.99 fully loaded)	$703.61 to $1,001.30	Listed	not found	Free shipping; "lifetime warranty" is the listing's own wording; another size-B listing is $699.99, condition not shown in search results	first run	scam risk (marketplace, warranty claims unverified)	Newegg, 5 Oct 2026
Herman Miller Aeron size B	B&H Photo	not found	not found	not found	not found	search "herman miller aeron size b": no results	first run	—	B&H search, 5 Oct 2026
Herman Miller Aeron size B	Micro Center	not found	not found	not found	not found	search "herman miller aeron" returned 60 unrelated products (routers, gaming chairs, accessories)	first run	—	Micro Center search, 5 Oct 2026

Best offer per item

RTX 4090 Founders Edition: Amazon 3P (DG's Vault) at $4,440.00, about $4,806.30 landed (estimate). Cost impact vs your $1,899 list price: +$2,541 per unit before tax, so a bundle priced at $1,899 is far below what a 4090 FE costs on these four sellers today. Your 400 GPU-hours/month is a usage figure; I did not compare it to cloud rental prices, so no monthly impact is computed. Confirm before acting: this is a single-unit 3P offer.
Samsung 990 Pro 2TB: Newegg at $385.99, about $417.83 landed, if the Newegg-sold offer is confirmed. Otherwise a tie between Amazon.com and B&H at $389.99 each ($422.16 landed). Cost impact vs $165 x 40 per quarter: +$220.99 per unit, +$8,839.60 per quarter at Newegg and +$224.99 per unit, +$8,999.60 per quarter at $389.99 (arithmetic from the listed prices, before tax). The $165 baseline is well below every new offer found, so it looks stale.
Herman Miller Aeron size B: Amazon 3P (Office Logix Shop) Classic Aeron at $649.00, about $702.54 landed, or Newegg's $649.99 armless listing at about $703.61. No baseline supplied.

Notes on unclean rows

4090 FE, Amazon and Newegg: both offers are third-party. They sit at about 2.2x to 2.3x the $1,999 MSRP shown on rtx.live and the page shows few units in stock. The Newegg figure and the 7-day change come from rtx.live, an aggregator I treat as a lead, not from Newegg's own page. I did not open Keepa or camelcamelcamel.
990 Pro, Newegg: the $385.99 figure is the search-results price with a "$385.99 to $740.84" option range; I did not open the product page to confirm the seller, stock or shipping. The same search lists a heatsink 2TB 990 Pro shown at $483.75 (options from $448.99) and a non-Pro 990 2TB at $369.99, which are different SKUs.
990 Pro, B&H: the page shows a $639.99 crossed-out price with $389.99 current, so the "Save $250" claim is the seller's own and not a market baseline.
Aeron, all rows: size-B chairs come in Classic and current-generation versions, and the Amazon 3P listing's item details say "Renewed Classic Aeron" and the condition of the Newegg listings was not confirmed. Do not treat them as equivalent to Herman Miller's own new price (Herman Miller's store was not checked).
Tax and delivery: the 8.25% rate is an assumption; Amazon's delivery estimates reflect the ZIP the fetcher was served, not Austin.

Alternates, shortages and EOL

RTX 4090 FE shortage/EOL: B&H shows Gigabyte 4090 listings as "No Longer Available", and Micro Center returned no 4090 cards. I did not find an NVIDIA end-of-life or last-time-buy notice, so EOL here is inferred from retailer availability, not confirmed by the manufacturer.
GPU alternates seen: B&H lists the ASUS RTX 5070 Ti ProArt OC at $1,399.99 in stock; it is a different card, not a drop-in match for a 4090.
SSD alternate: Newegg lists the non-Pro Samsung 990 2TB (MZ-V9V2T0B/AM) at $369.99, lower speed class than the 990 Pro.

Do next

Open the Newegg 990 Pro product page (MZ-V9P2T0B/AM, link seen in search results, not opened) and confirm the seller, stock and shipping before quoting $385.99.
Re-baseline your SSD budget: the $165 per drive assumption no longer matches the roughly $386 to $390 market seen on all three sellers that list it.
Do not price the 4090 bundle against current spot offers without checking cost of goods; the cheapest FE seen is $4,440 on a 3P listing.
Decide whether a non-FE 4090 or a 5000-series card can replace the FE, since the FE has no first-party retail listing found.
Pull Herman Miller's own Aeron size B price to anchor the 3P and Newegg offers.

Coverage

Not reached or not read: B&H and Micro Center product pages beyond search results; Newegg product pages (search-results prices only); Keepa and camelcamelcamel; Herman Miller direct; any NVIDIA lifecycle page. The Newegg 4090 row relies on an aggregator, rtx.live. B&H and Micro Center facts come from live browser reads with no saved evidence file. Inputs $1,899, $165 and 40 units per quarter are user-supplied.