Pre-bid research for secondhand auctions · Coming soon
Know what it’s worth — before you bid.
Smalls Collective reads thousands of live charity-auction lots, does the all-in resale math, and shows you only the ones worth your bid. You sleep. It reads.
Watch-only. We never bid for you. · $19/mo founding rate for the first 100.
Salvation ArmyUnderpricedYamaha P-45 digital piano, tested
A real lot from our own pipeline. A tested 88-key Yamaha piano, valued at $230 on five exact sold comps ($250–$267). One bid, and it closed at $9.99.
biddable lots read every day, while you sleep
between sweeps, around the clock
valued against real eBay sold prices, not asking prices
after every cost, or it doesn't surface
As of July 2026, from our own live pipeline.
Every reseller tool starts after you own the item.
Crosslisters, inventory apps, repricers — they all manage what you already bought. But the money is decided before: in the hours of scrolling, the shipping cost you didn’t check, the “deal” that stopped being one three bids ago.
The tool that decides what’s worth buying didn’t exist. So we built it — for ourselves first.
Real finds from the tool’s own pipeline.
It found these on our own account — we watched them close. Shown with the tool’s estimate, the real close, and the net at that price.
ShopGoodwillUnderpriced31-piece vintage Rosenthal Germany china collection
Thirty-one pieces of vintage Rosenthal, valued at $250 on ten Classic Rose comps. Two bids, and it closed at $21.
ShopGoodwillLEGO Technic Airbus H175 Rescue Helicopter (42145)
Valued at $155 against sold comps for the exact set (42145, $140–$180). It closed at $60 — a real single-set match, not a lookalike.
And when the estimate holds, you can trust the ceiling. The tool valued this Universal Audio interface at $330 on real Apollo Twin comps; the market closed it at $305 — within $25. The closer the estimate lands, the more you can trust the ceiling it sets.
The net is all-in, or it’s a lie.
A resale estimate that ignores what it costs to get the item home is a fantasy. Before Smalls Collective calls anything a gem, it subtracts:
- The marketplace's cut
- Shipping to your door
- Shipping to the buyer
- Packaging
- A return reserve
- Your time (if you count it — your call)
And on a lot like this one, the deep check also flags the risks — on gold, that means verify the marks before you ever bid.
A real snapshot · Salvation Army
14K gold jewelry lot, 19.59 grams
- Est. resale (4 real comps)
- $1,350
- Bidding when the tool flagged it
- $224.22
- Est. net, after every cost above
- ~$870
- The tool’s ceiling
- $1,084
One dollar past that ceiling and you’re working for free. The tool says so, in red.
From a wall of listings to a short list.
It reads
Every 10 minutes it sweeps live ShopGoodwill and Salvation Army auctions — thousands of lots a day, in the categories you care about.
It values
AI reads the title and the photos, then pulls real sold prices for comparable items. Not asking prices — what things actually sold for.
It does the math
The marketplace's cut, shipping both ways, packaging, a return reserve, your time. All of it, subtracted before anything is called a gem.
It taps your shoulder
A phone alert when something clears your floor — with the suggested max bid already worked out, before the auction closes.
It protects you from your own excitement.
The temptation is always “this one’s special.” It’s how a $40 win turns into working for free. So the suggested max bid isn’t advice buried in a report — it’s a number that turns red the moment a higher bid stops making sense.
That red number is the product.
A real close · Salvation Army
Behringer X-Air XR18 digital mixer, tested
- Est. resale
- $350
- The tool’s ceiling
- $244
- What it closed at (98 bids)
- $425
The tool capped this mixer at $244 — the most you could pay and still clear your floor. Ninety-eight bids ran it to $425. You'd have walked, and been right.
“I’m not a hedge fund. I’m a mom of two in Memphis who refuses to overpay.”
Smalls Collective is built by Miriam — the sourcing eye, from years of antiques and estate sales — and Tim, who keeps the numbers honest. We’re customer zero: Smalls Collective runs on our own money first, every day, between school runs and nap windows.
Our first win — a limited-edition Lakers jacket the tool flagged — is being listed right now. When it sells, you’ll see the real number. That’s how we’ll always do numbers: we earned ours, and your results will vary.
She also won’t pretend a used lamp saves a rainforest — just that buying it right sends real money somewhere it’s needed. See the case →
Simple plans. Honest math.
See full pricing →One $40 gem a month and Sourcer has already paid for itself. Everything it finds after that is yours.
Fair questions.
When do doors open?
When the math has paid for itself on our own flips — we're running the tool on our own money first. Join the list and you'll be the first to know.
Do you bid for me?
No. We're watch-only research. We show you the lots that clear your margin floor and the honest math; every bid is yours to place, on your own accounts.
What will it cost?
Plans start free, and the full plan is $29/mo — $19/mo founding rate for the first 100 members, locked from this list. See pricing for the details.
What's a deep Investigate?
A full research pass on one item: every photo studied, extra sold comps pulled, maker's marks and risk flags called out, with a written verdict. Each plan includes monthly credits.
Isn't this just profiting off charity?
We don't think so, and we can show our work. Most of every dollar Goodwill spends goes to its mission (job training, employment), and Salvation Army thrift sales help fund free addiction recovery — a winning bid is a purchase that feeds that. And auction economics says more informed bidders tend to raise what the seller earns, not lower it. See our "Why we built this" page for the full case, with sources.
Be first through the door.
Doors open once the math has paid for itself on our own flips. Join the list and the $19/mo founding rate is locked for you — first 100 members only.