Does anyone know a website (that is reputable) where you can buy a wii and pay in installments?

I know that buying things by paying in installments ends up being more expensive, but I am willing to pay a bit more to be able to make monthly payments. My 9 year old wants a wii very badly for Christmas and I am currently not in a position to pay the 200 bucks up front, well I could but then I would not be able to get him any games or accessories. So if anyone can help me out, let me know, and please don't post things like "if you can't afford to buy it outright then you shouldn't be buying it at all", you don't know my situation and those types of posts aren't helpful to anyone. thanks and god bless.