Only if you feel compelled to buy everything they put out at top dollar. If you're okay with possibly missing out and are willing to wait, most can probably be had from ebay after a few months or years for $20 or under.
Well that's the thing, I don't buy every variant but I've passed on so many variants that I wanted thinking they'd eventually cool off, to just find out they are either way out of my price range now or still climbing. One good example is the JSC variant of Amazing spider-man 688. I could of had that for $50 a couple of years ago but thought it'd eventually lower in price and be more affordable.....but unfortunately I was wrong and now it's a few hundred dollar book now.