A verdict, with math — not a guide
Every published answer to this question is written for established resellers in competitive categories. A new seller is in the opposite situation: selling mostly unique, used, one-of-one items that nobody else stocks. Run your own sale through the decoder with promotion switched on and off — then read why the answer comes out the way it does.
Tell it about the first thing you plan to sell. It answers with the three numbers that decide your first month: what you keep, what fits under your new-account limits, and the date your money lands. Nothing you type leaves your browser.
The verdict: skip promotion until you sell things other people also sell
On a $25 sale at a 5% ad rate, promotion costs $1.25 when it “works” — it is charged only when a promoted click leads to the sale, so it feels free until it isn't. Your keep falls from $16.20 to $14.95. What did the $1.25 buy? Placement in front of searchers — for an item that, being the only one of its kind, they would have found anyway. Promotion buys an edge against competing listings of the same thing. A new seller's closet has no competing listings. It has an audience problem of zero, and a proof problem of ten.
Until then, the money a rate would take is better left in the keep — and the decoder's promoted line shows you exactly how much that is, per sale, before you volunteer it.
The First 30 Days Kit turns one decode into the whole month: the day-by-day calendar (limits, holds, when cash actually arrives), the First-10 listing worksheets, the hold-avoidance checklist, the limit-raise playbook for days 30/60/90, and the fee-proof pricing sheet for the common categories.
Included in the $39 First 30 Days Kit
Fees & hold rules checked October 21, 2026 — from eBay's own help pages