I looked around for pricing on a wheat grinder and found that pricing didn't vary much on brands. There are several brands out there to choose from. I went with a Nutrimill because a friend of mine has one and it works great. It is quiet and doesn't spit the flour out when grinding like my old one did. I am very pleased with the Nutrimill. No association with the company, just a little ole bread maker who needs to grind wheat for flour.
Another place to look is in beermaking supply places--if you can't find any near you in the phonebook, you can write down net addys and addresses from the back of magazines like BYO (Brew Your Own) and Zymurgy. The beermakers crack grains with them.
Also Lehman's carries a grain mill you can use to make your own breadflour from scratch. I think these mills both run around $40, but don't rely on that.