Originally Posted by
davei1980
Forgot to mention also, I make every effort to pay in cash (actual currency) at my LBS since the owner has expressed to me the hardship created by processing fees. It's no additional trouble to me and helps him with his bottom line. He will also offer cash discounts sometimes but I don't come to expect.
Handling cash also cost money for counting, transport, insurance and so on.
There usually is one reason to prefer cash, the IRS.