Cerials-  Seal the plastic bag properly, they will last as long as in an unopened bag.  Bakery- Freeze the muffins!  Or eat them until you're sick.  The rest of it is good advice. Also note that the electronics warning applies to other big retailers like PC World \Dixons.  Costco is not grea for wines, beers & spirits either,  though they do have good deals from time to time.

The last points regarding model numbers being different.... Having worked for Sony and having been involved with this very thing... Curry are provided with a unique model number for a TV (it looks so much like a certain model but it's not) also it prevents price matching.... Always thought it was shady