Not sure if you're a frequent eBayer, but the common behavior in that community is just "A+++++++++" with some arbitrary number of "+" indicating that everything went fine.
Re:Stack Overflow Outage Postmortem
by MyNameIsFred on Wednesday July 20, 2016 @08:25PM
(#12133649)
He's no doubt observed that and is using whitespace to rail against the ridiculousness of that convention.
[0] eBay insists on something being entered and when it was a routine transaction with a vendor I seldom have anything useful to say.