Are they worth the money? Which hot tub is the best to buy? I went to a hot tub sale today at the mall and a small one was $8,000. Damn! Now I just found out that Costco has hot tubs for $2,000. I think that dude at the hot tub sale was ripping me off. Are the Costco hot tubs any good? I need the most powerful jets they make, whatever that is. Thanks!