18 boxes
I see boxes of wolf going for $4.99 regularly at stores. Sometimes $4.49.
$5 x 18 = $90.
Assume $15 S & H
$90 - $15 = $75 ----> $75/18 = $4.17 per box, before shipping
So I think you'd have to advertise them at or under $4 a box to make people even take it serious. More like $3.50 IMHO. But I am a nervous nellie, I would much rather pay a few bucks more overall, and just get what I want at the store, than deal with private sellers/shipping/waiting/etc.