Ok...so it took me 4 bottles of blue potion and 1,000 rupees to beat that cave. By the time I got to the end and beat the last guys I was down to one heart and 29 rupees. I barely made it out of there alive. And as for the prize, I think I deserve at least 20 more hearts for having to go through with that.
Sorry, I didn't realize there was another open thread on this topic...my bad