From a consumer point of view, I find it much easier to pay my server bills via PayPal/CC as the merchant will get the money right away and any outstanding bill will be taken care of instantly (hopefully at least). However, not every consumer is like me and some prefer to pay via cash, how do you deal with those customers efficiently as I imagine that several problems could arise from that form of payment (lost/stolen money, late payments due to mailing delays etc.)?