Simply divide your BTC into paper wallets in a variety of sizes from $5 to $100, and when you need to make a transaction, mail the right combination of wallets to the person you want to pay.
Mailing costs money, too; it's slow, and there's no proof that I've made the transfer. Plus, if that person wants to consolidate their funds, they will have to pay the crazy costs still, i.e. they will put it into their pricing model! How about comparing apples to apples?!