Eh, the higher the tier, the less rounding matters. Im okay with the rounding as it has been done here. Ironically, the rounding here makes the rounding on the bandito more acceptable as well, as the sale would actually be 66 if it wasn't rounded, though on flat values below 100 keys I'd call for not rounding in most cases.

I'll be honest, I wouldn't have let 30 flat in your situation bother me too much either, though it'd be entering a grey area. On the lowest tiers I generally call for not rounding at all, but it's hard to determine a hard cutoff there. For rounding up or down 1 key on either end of a range ive always taken 30 as "threshold" value myself (to which the above is really close), but all of that is really arbitrary.

I personally wouldnt close this or the bandito for rounding issues since I feel both fall within our general margin of error, and as long as it won't be done pointlessly and/or well outside our guidelines, or consistently to one side (e.g rounding 77-87 to 80-90, or 76 to 80), I do not believe either option (so rounding vs not rounding) is better than the other and thus I'd find either acceptable. There are some exceptions where I prefer not rounding over rounding, but they're mostly personal preferences.