If you're a Sprint user looking to pick up a cheap Samsung Galaxy S III, it could be in your interest to wait the extra two months until Black Friday. Engadget has received a snapshot of a Sprint Black Friday ad from a tipster. In that ad, the Samsung Galaxy S III is offered up for $49.99, with two-year contract.

The offer is good for both new and existing customers, so this could be a perfect time to jump ship if you've been thinking about it. After all, Sprint offers up unlimited smartphone data, and they've been using this fact to draw customers away from the other carriers. Couple unlimited data with a cheap Galaxy S III and the plan will work that much better.

It is expected that quantities of the discount Galaxy S III will be limited, so you may consider lining up outside your local store in the wee hours of the morning to guarantee you get a device. If lining up early isn't your cup of tea, I'm sure they'd be happy to offer it to you at normal price or one of their other smartphones.