I have ridiculously expensive Le Creuset enamel cast iron as well as Lodge and cannot tell the difference in quality. The only discernible difference after years of use is subtle styling details.

Non-enamel Lodge cast iron is not very expensive. I've purchased almost all of mine at Amazon -- with free shipping. Here's a 12-inch pre-seasoned skillet for $19 (free shipping):

http://www.amazon.com/Lodge-Logic-12-Inc...9223&sr=1-1

Have gotten some terrific deals at Amazon on enamel Lodge as well as their pre-seasoned line. Some good deals right now on their enamel 3 and 6-quart Dutch Ovens (and with free shipping).

http://www.amazon.com/Lodge-Kitchen-Hous...;pf_rd_i=289814