Yeah, lost interest at the 3% fee for an ACH transfer... They say they're pricing is competitive and cite these other services but fail to note that there is no fee from most any service when it's an ACH transfer.
My bank has done free ACH transfers for over 20 years.
They'd be better off selling themselves as escrow agents, which is basically what this is, instead of pretending they're a payment service -- which they clearly are not. If you're willing to pay 3% for an escrow agent -- this seems like a good thing. For a $500 handgun -- $15 for what basically amounts to a secondary insurance, doesn't seem to bad. You start spending thousands, though, seems steep. Might be worth it for no-feedback-no-reputation sellers but for trusted community members I'd rather keep my cash and send the $ to SH who built the community where the real benefit comes from.