STP used to be a great source for well-discounted quality items. There were generous 35% off coupons and free shipping. The changes have been insidious. First, the coupons were cut back to 25% and then to "up to 25%," which, as far as I can tell, often means no discounts at all. The selection of items is diminished. The "deals" at STP on things I am interested in can often be beaten elsewhere -- at places with more reasonable shipping and return policies.
To top it off, I got an email the other day from STP's parent TJMaxx -- free shipping. I think it's safe to say that I have no interest in anything that TJMAxx sells and that probably goes for a lot of STP customers.
Goodbye, STP. It was great while it lasted.