no one has been able to crack cultivated chanterelles as far as i know, they are Mycorrhizal so they depend on a relationship with the roots of trees. it's the reason they fetch such a high price($30-60 per lb given the right market), people have to forage them and their flushes are sporadic and fleeting. someone has been able to cultivate black morels but last i heard they had patented their technique and weren't spilling the beans.
cultivated shiitake or oysters from logs are excellent, indoor cultivated ones are a bit lower quality in comparison but still very good to eat. you could get a very good start with 10 grand i would imagine but i've never priced out anything of a commercial scale. check out this link, this guy has a really nice place going in washington state:
http://www.mushroomvideos.com/Mountain-Mushroom-Farm