Ruby distills a live auction into three simple verdicts. Here is what each one means and how to act on it.
GREEN / BUY
A green call means your all-in cost leaves a healthy margin against realistic resale. It's the signal to bid up to your ceiling with confidence — the math is on your side.
THIN
A thin call means there's still profit, but the margin is slim and sensitive to fees, shipping or condition. Thin lots can be worth it in bulk or when you can bundle shipping, but they punish mistakes.
RED / PASS
A red call means the current bid already erases your margin. Passing is a winning move — the buyer who passes eight bad lots and wins two great ones beats the buyer who wins everything at retail.
Confidence matters too
Ruby also shows how confident the match and comps are. A high-margin call on thin data deserves more caution than the same call on deep sold history.
Three words replace a spreadsheet: BUY when it's real, be careful when it's THIN, and never be afraid to PASS.