If somebody told you to mail them $13.50 and they will mail you back $10, you would think they were crazy. But in today's world this is a valid idea for a startup?
I love that the justification is that places won't make change. Three foolproof steps to successfully obtaining change from a convenience store (clerks hate him!): (a) make a purchase, (b) pay with a $20, (c) ask for a roll back instead of the $10 and the clerk will drop one out of the safe for you. When 30 seconds of your time exceeds $7 in value, implying you make $7 million per year, buy a washer. EDIT: Before you…
Now, if you want to be galled by the price, perhaps comparing it to the US Mint would help? I reckon the parent service is charging just about a third to half of what the mint charges for collector's grade coins [1] (depending on shipping). I think that's a fairly unflattering comparison. Even though I have some anxiety about asking a store clerk for something out of the ordinary, an extra roll of quarters for every four rolls is probably worth it.
[1]http://catalog.usmint.gov/webapp/wcs/stores/servlet/Category...
EDIT: Ambiguous pronoun.