A Honeywell ST9120U1011 fan timer sells for about $50 on eBay, from 71 sales between Jul 28, 2026 and Oct 25, 2026. Most sell for $39.92 to $74.99. Used ones bring $47.47, new ones $74.99.
$50eBay sold, middle price
$39.92 to $74.99typical range (middle half)
$47.47used, 50 sales
$74.99new, 21 sales
65sold in the last 90 days
What it goes for, whereLocal auction, eBay new and used, and what you keep after every fee.
Every eBay sale over time71 sales, Jul 28, 2026 to Oct 25, 2026. Tap a dot for its price.See the numbers
Month
Sales
Middle price
Jul 2026
2
$27.50
Aug 2026
19
$49
Sep 2026
20
$53.48
Oct 2026
30
$64.75
Where the prices fallThe shaded band is the middle half of sales: $39.92 to $74.99.
The flip math
What one Honeywell ST9120U1011 is worth to a reseller, line by line.
Sell one on eBay
Sale price (low end of typical sales)$39.92
eBay fees (13.6% + $0.40)−$5.83
Shipping it to the buyer−$10
Returns and duds buffer (15%)−$3.61
You keep$20.48
To keep at least 2 times what you pay, bid no more than $6.41. Above $14.37 you lose money after every fee. Run your own numbers.
Selling notes
55% of sales shipped free; the rest charged a middle $8.29 for shipping.
14% sold through Best Offer, where the real price can be lower than shown.
The last 60 days are up 11% against the 4 months before.
26 sold in the last 30 days, 65 in the last 90.
Questions
How much is a used Honeywell ST9120U1011 fan timer worth?
About $47.47 on eBay, the middle of 50 used sales between Jul 28, 2026 and Oct 25, 2026. Most used ones sell for $39.92 to $74.99 once new ones are counted too.
What does a new Honeywell ST9120U1011 fan timer sell for?
New ones sold for a middle price of $74.99 across 21 eBay sales.
How fast does a Honeywell ST9120U1011 sell?
26 sold on eBay in the last 30 days and 65 in the last 90. Prices are up 11% against the months before. 55% of sales came with free shipping.
Is a Honeywell ST9120U1011 worth flipping?
Sold at $39.92 on eBay you keep about $20.48 after fees, shipping and a returns buffer. To double your money, pay no more than $6.41 as a winning bid with an 18% premium and 9% tax.
71 eBay sales of the Honeywell ST9120U1011 from Jul 28, 2026 to Oct 25, 2026, each one checked to be this model (at least half name it in the listing; the rest match it closely).
eBay prices are completed sales (what buyers paid), not asking prices, from our sold-data provider. We keep only sales of the same product: parts, accessories, bundles and look-alikes are dropped before anything is counted.
Local auction prices are winning bids on single-item lots at the Kansas and Missouri online auctions we track (HiBid and Equip-Bid sellers), read by our own lot reader. Lots of several units are left out.
The money math uses our standard costs: 18% buyer's premium, 9% sales tax, a $2.00 lot fee, eBay's 13.6% + $0.40 fee, shipping at cost (never counted as profit) and a 15% buffer for returns and duds. Members set their own.