OK, maybe we have had a little cross purposes here … if placing an intended SP Lay i.e. SP from the start. no "take SP" at the off, then the Betfair website says …Dallas wrote: ↑Thu Apr 04, 2019 4:49 pmI did state above the min for SP lays is £10 liability so bets of a few pence will go through if high enough, those that don't will (should) be rejected by Betfair, I've certainly not heard of anyone getting a lay with a liability of less than £10 through as an SP bet nor a back bet with a stake below £2 (which is the SP min for back bets)
Win Only Market
Minimum stake for lay BSP is £10 (my emphasis)
… So maybe it was wrong of me to assume you saying it is a £10 liability was a typo!
Are you saying it's £10 liability if done as a "take SP" at the off? That may explain things.