DM that rips off your customers? Brilliant!

Budget car rental in the U.S. has been sending $10 cheques to customers who've rented from them over the past year or so. Hey, everyone likes an extra ten-spot.

Except for a little hitch. Signing the cheque means you agree to be signed up for a 'shopping club' with monthly fees - fees charged to the credit card you used to rent your car with.

Shenanigans or brilliant marketing ploy?