It really depends on what kind of quality you want. You could likely get a 9ft pre-lit for as little as $150, but it's not going to be of very good quality.
I was looking to replace my tree this year myselt, Costco so far has the nicest one (IMO), it's a 7 1/2 foot for $259. They have 9ft trees too, although I didn't look at the price, but I'd guess it's in the low $300's based on the cost of the one I want.