Lol! Well what kind of hash? Bubble hash? Wax? Buddar? Shatter? And wait.. WHAT?! cook with hash?? The hell? To be honest please don't waste your hash like that.. If you want an edible, then get some weed or trimmings and make weed butter, then from there make your edibles. If you try to cook with hash, you just going to ruin and lose more than 50% of it... not worth it dude..
As for the Prices, (at least in my area: Bay Area California) 1 gram of buble hash goes for $20-$30, wax, $35-$40. Rough the same all around as I doubt you know someone who makes shatter... I've only seen it at dispensaries. Hope this helps, good luck.