I think you are looking somewhere in the 600.00+ range. It depends on what you want it do. For Turbo, for N/A with Camshaft. 3 valve angle job. What ever you like will increase its price. In my head, I opened the exhaust as much as I could. No polish [for the moment] I still have to change the guides and do some other stuff to it.
Head work can be really expensive, depending on what you wanna do with it. Getting it fully flowbenched with a 5-angle valve grind will run you thousands. Getting it basic port & polished on the exhaust and ported on the inlet side (match-ported would be ideal) will probably run you a few hundred bucks.