How long will this sale last?

Me and my mom both needed to get phones and today I saw on Walmart.com that iPhone 5 is on rollback for about a hundred bucks. My mom said she would get them the next time she got paid. I don't want the sale to end before she gets paid in about ten days. Here's the link:

http://www.walmart.com/...26.3585-L0

They will probably continue to be on sale, if not specifically at Walmart, then at the ATT store. They always drop when a new model comes out and there's one coming out in a week or so.

What in the hell does this have to do with real estate in any shape form or fashion?