Wal-Mart's never always consistent across the board, but, rather they will beat the local prices at the manager's discretion for each particular location when selling below the "normal" sale price.
So don't be disappointed that your local Wal-Mart isn't offering the same deal as the one in Roberto's area. If you don't have an ad stating a low low price, it's totally a crapshoot for a lower price.
Our Walmart here seems to have their own pricing scheme. I got ET at $14 something when it came out but the other deals wasn't there. Today, I saw MIB 2 for $14.04 and took it home.
14.77 at mine too, $.10 less than Kmart. They must be getting wise about beating Kmart before we try to pricematch for 10% more off. I was hoping they would have The Producers but no luck; probably not enough demand for them to carry it.