Well at this facility (county jail), you can't give them ANYTHING but money and a bible (they will let you drop off paperback books as well). I think there is a 24 hour window when you can take underclothes for them, other than that they have to buy everything. You can't give them envelopes, stamps, or anything else, and they make pretty good money off the items being sold. Kevin showed me the price list once, and it was crazy. I think it's like .70 for an envelope with .41 prepaid postage on it. Doesn't seem right to me, but what can ya do?