don't spend much on it either way.
They are a total flop in sales, and a lot of them are being sold already (people just aren't getting what they wanted and are looking to recoupe (sp?) some of their money).
Make sure you look at what edition you are getting too.
There are basically 3 versions none of which can be modified as I understand (one doesn't have HDMI, and all three have different HDD sizes). Basically they came out with a new top end model, stopped making the low end model and shifted the prices down of the top two models.
What does that leave you with. Basically you are going to get one of the top end models, but the "price drop" didn't actually drop the amount of money you have to spend, you just get a slightly different (argueably better) system.
As far as cheap places, the prices are pretty standardized, unless you can find a places that is attempting to get rid of their stock of PS3's and plans to stop selling them all together. You other option (as the previous poster mentioned) is to get it from a person who is selling their, just be sure to read the fine print, and check their rating to ensure you'll have a pleasant transaction (I've never had a bad experience purchasing an item from eBay, though selling is a different story).