If you purchase at sears.com and do in-store pick up, they'll match Amazon prices and give you 10% of the difference. So... sears.com is linked on most airline portals (I do this with CO). You find what you want at Amazon... build your order & print it. Then purchase at sears and go into the store to pick up. Find the manager and get the price match. If they don't, just don't pick it up.

But... make sure the manager doesn't void and re-enter the sale as in-store.