I'm sure you guys have heard of Lodge, yes? Best cast iron for the money. I think my 10 inch skillet cost like... $20 or something like that. Eat your heart out Le Crueset lol
After ever use, let the pan cool, put it under warm water, i have a bristle brush, scrub lightly until surface is clean... wipe dry. Done. Every once in a while i'll put a coat of veggie oil on the inside of the pan.