Tried the 10/75 exp. 11/21, the 10/75 ex. 11/20 (through buy.com email offer), and the 20/100 exp. 11/15, and kept getting the message that the coupon has been used. Haven't tried the 15/150 yet?

Anyone else has this problem?

Update:

The problem seems due to the fact that the order is completely paid off by gift certificate. By applying GC a few dollars off from the total amount, I finally got it to work.

[This message has been edited by vernie (edited November 15, 2000).]