Sometimes hold out for a healthier animal is best. You never go in and settle on a pet. I don't go apartment hunting and settle on the first apartment I see just because it's available right when I need it. I may have to hold off and stay in a motel for a couple weeks until a better apartment is available.
Amazon.com: Online Shopping for Electronics, Apparel, Computers, Books, DVDs & more
Reptile Supplies, Reptiles, Amphibians, Invertebrates, Cages, Feeders, and More
- The Bean Farm
Reptile Basics - Top Quality Reptile Supplies and Caging
Those sites are your friends. If you're going to rely solely on your petco (I volunteer at a Petco, fyi. I go in two days a week and see this constantly) then you'll never provide what your gecko needs. I suppose you could reply on petco, alone... after you pay out the ass for the over priced items, listen to their crappy advice that are given to push sales on items too small, inaccurate, or unnecessary, that some managers tell their employees to do. Not the employees fault, that's the world of a franchise. Sales sales sales, even if it's at stake of the animal.
I was short with you because I'm fed up of people not joining a forum and I apologize (I hate when people use excuses, and "it came with it" is clearly an excuse, so is the "it's the only one they had and I didn't want to wait" crap), or looking for a professional prior to purchasing an animal. You've spent money already on things you're going to have to replace.
I suggest searching through these forums for information. You can learn a lot. And click through those links to find supplies cheaper than your pet store.