They will cancel your orders if their online price is accidentally less than their in store price. I ordered memory cards and was going to save a few dollars compared to buying the items in store...but instead of selling the items for their mistake in the slightly lowered prices, they canceled my order. If this occurred in the store, they would have sold it for the few dollars less since it was the advertised price.
Sears just lost a customer for life over a few dollars and mistreating customers!
This site appears to be benign enough, and it has zillions of items available for purchase. I found it to be badly designed, however -- cluttered, too many pop-ups, unsatisfactory search functions, many items are not identified by part/item number. Too many hoops to jump though just to buy something from them.