The reason why I'm asking is because I'm selling some of these:

http://www.ebay.com/itm/281274780304?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

but I don't know if it's really worth it to include standoffs. I don't know if people would appreciate that extra $5, what do you think?
I obviously have these cases for myself, and I don't use standoffs, or nothing like that.