I do this every year! I put everything I want in layaway around the middle of September and then watch the Sunday ads like a hawk and go in for a price adjustment when something goes on sale anywhere including Wal-Mart. On Black Friday, I take all my ads and hit the store about an hour before the Doorbusters start and collect anything that I want that is on sale at other stores, scope out the location of any Buster deals I need and then I stash my cart in shoes right next to layaway and then go hang out to get any Buster deals I need. I grab what I need as soon as its unwrapped and then run to layaway (not having a cart speeds things up getting through the store). I grab my cart and usually am in line less than 10 minutes. I add the new things to my layaway and then do price adjustments on anything that is on sale already in my layaway. I'm usually out the door by 6:30am. Then I wait till the last possible day to take it out so I can take advantage of any late season sales and I don't have to hide it from my kids for very long. I saved over $400 off the original prices when all was said and done last year doing it this way.
One note of caution, WalMart's register can only handle 100 entries per layaway (items, deletions, and price adjustments) and then you can't do anything else but take it out. The year this happened to me they noted my account and finished all my adjustments and any new ones after I took it out, but I don't know if they'd do this again, so I usually put in 5, one for each kid and then one for family, that way I don't have to worry and it helps keep track of which kid is getting what and keeping it all even. I know 100 entires sounds like a lot, but if you put in 25 items, price match several times, remove a thing or two and then add some things it adds up quick.
