For those of you who missed out on the 30% discount at Amazon recently, this might help ease your pain a bit. Just received this email after inquiring with Etrailer.com (with whom I've happily done business in the past) about discounts on their MagnaFlow exhaust lineup:
"Thanks for your interest in Magnaflow. I have a special on all Magnaflow products right now. You can use the referral code PERFORMANCE during checkout and get a 12% discount on your Magnaflow order if it is placed in the next 24 hours. Hurry! This is a very limited time offer. I have one of the largest inventories of Magnaflow products and will make sure your order ships promptly."
When you're checking out, click the "Referral Code" link in the Shipping Options box and enter PERFORMANCE when prompted. On the parts I checked, Etrailer.com was competitively priced and with free shipping beats Summit and Jegs, who advertise free shipping but charge a hefty "handling" fee.