Depends on which discount you are looking at. They have several
If you read the banner above, it's 25%, using AGNATION. I used it about two weeks ago, and it was 25%, with free shipping on Fridays. They have another site wide discount of 20% going on simultaneously, so if you don't know the AGNATION code, it's only 20%
I did order on-line and used the coupon code, and double checked the math. was 25% off.