Yesterday I tried to place an order with Performance. What a clusterfk! The web site appeared to take the coupon, but then said my credit card was declined. The credit card company said that the card was fine and no authorization request was even made. Performance Customer Service said that the web site ordering system doesn't work very well and I should do a phone order.
The guy that took the phone order told me the 6001707 coupon code has expired, but gave me 10% anyway. According to the web site, the coupon is supposed to be good through 8/1.
This does not leave me with the urge to order more stuff from them.