No, you don't want a pet iguana if you're expecting the same amount of work as a snake, they're a Huge PITA.
I've got Iggy right now who I adopted from the humane society 5 years ago, I still don't agree w/ people keeping them unless they're rescue animals and they're willing to work their lives around them. As others have said, breeders sell them indiscriminately and then they die of kidney failure and MBD before they hit sexual maturity. They're incredibly complex animals and what I'm about to describe is a minimum standard of care.
Iggy (and all adult iguanas) requires use of an entire room, which he shares with me, which means that my room must have a very high temp and humidity, with basking sights that reach the high 90's and contain his whole body and most of his tail (he has stunted growth from his previous owner, still he weights 9 lbs and is 4 1/2 feet long). His diet is very specialized and expensive, the anapsid.org web sight that ynaffit linked is excellent, and Melissa Kaplan is considered to be one of the most knowledgeable people about iguanas in the world. She has a simple salad and extensive lists and information about iguana nutrition, don't even consider the pre-made iguana diets, I've never seen one that I wouldn't label as iguana poison, they're not meant to eat corn and wheat foods.
The iguana will destroy the room, right now I'm moving into a rental and I'm having to put down a tarp covered w/ an area rug and cover the walls his shelves will touch to keep them clean, in addition to a very hefty pet deposit. No matter how well they are trained eventually you will have to go away for the weekend, work late, change his food, breeding/egg laying season will come, etc. and there will be some poop painting and food throwing. If I go on vacation I can be guaranteed that Iggy is going to crap all over my bed when I get back, so I keep a plastic sheet on my bed at all times.
Expect to spend quite a bit on initial set up as well, I've spent well over a thousand dollars on heating/lighting equipment alone, ceramic heating elements are the best way to maintain day/night temps, and they run about $35-40 a piece, and also require expensive fixtures (haven't had to buy one in awhile, I just remember it hurting), you also need reptile tube lights, I keep two and replace them at 6 month intervals so that there is always a new one, they are about $30 a piece, again w/the fun to buy fixture. Remember that the iguana needs to fit their entire body/tail in the light/heat, so you'll need more than one. The lights must be on a 12-13 hour timer, so from the hours of 7pm-7am, my room is dark, regardless of what I need to be doing. I've gotten ready for school in the dark for entire school years to avoid waking him up. They have a retina covered by a clear scale on the top of their head so even if their eyes are closed they know the lights are on and can't sleep properly. Longterm improper lighting schedules will cause stress, weakened immune system, aggression, etc.
The iguana must be provided with the opportunity to explore, and exercise, which is especially important for females. If they're not offered enough opportunity to climb and exercise they may be unable to lay eggs which requires and emergency surgery and has a high mortality rate.
I could go on, but I'll just say that if you still think you want one read Melissa Kaplan's "Iguanas for dummies" several times, get everything set up and then adopt from a humane society or shelter, breeding iguanas is (in my well researched and founded opinion) incredibly unethical. They are the most popular and the most abandoned reptile in the united states. They can live for over 20 years if you're doing your job right.
ETA: Vet bills, how on earth could I forget vet bills?!? Iguanas don't show a lot of signs of sickness so everytime Iggy is stressed out, acting weired, not keeping his normal schedule, etc. I get to go to the vet and drop $100 on blood work, not to mention the time and $$ it cost me to find a vet to see him who wasn't an iditot. Thankfully hes been fine so far, but if your iguana gets sick it will cost you some serious cash. Build a relationship with your vet now because if your iguana goes into renal failure you're going to want that payment plan.
ETA ETA: Oh, and the scars, how did I forget those? If you're interacting with your iguana like you're supposed to you will get scratched, if iggys tail rubs accross bare arm wrong it scrapes the skin, even if hes not in a bad mood (lets not talk about breeding season, thats why he got dumped in the first place, nasty nasty personality when horny) If he bit my bare skin I would need to go to the hospital and I seriously doubt there would be much left to stitch. Some iguanas just don't really like people all that much, if he is scared or sick he might become agressive. Iguanas are not cute or cuddly (ok, so iggy does come sleep on my bed and cuddle, but it isn't cute! he steals all the pillows)
The point in, be ready to get bitten because at some point it will happen, expect to get clawed, cause that will happen a lot. If you're really into your skin iguanas are not the pet for you.