The Sears web site has been a slo-mo train wreck for years. It has problems on every level.
Things I have run into myself:
Filtering input- put a $ in any input field and it will crash when you hit next.
Product database- open stock Craftsman sockets, a common "oh I need a replacement" item, listed in a.) multiple categories, some here, some there b.) multiple titles c.) multiple abbreviation schemes. No one search returns all 3/8 Metric 12 points, or all SAE 6 pts, etc.
Search- fails at the most basic level. Copy the product title. Search for it from that product. Not on first page of results, most of the time.
Fraud- I hit Purchase (or whatever), and my DOLLAR TOTAL CHANGES UPWARDS. Or downwards. Usually upwards. This is not "bait and switch", this is pure fraud. I have screen shots of the craziness. It's a wonder someone hasn't gone to jail for this.
Despite all this, I milked the site for points and near-free stuff, on and off, for a few years. Some Craftsman stuff was still good up to the end, for example the 10# slide hammer was really Bosch/OTC (it shipped from a Bosch warehouse), the air drill I got was Florida Pneumatic. I got both cheap with a heap'n help'n of points.
But was it worth the trouble? I had to cancel the air drill order 4 times until I got it to actually use the points it said it was using. That process took 2 weeks. But I got my bargain! lol
Most sane people would not put up with such madness.