I don't think a 13 year old could have a credit card. :3 Or paypal.
Yes - bigger is better. Look for a pot that's used for young trees or hedges - something that's deeper than it is wide. I have most of my adult pitcher plants in pots that are a foot or more deep and they love it. Darlingtonia like to spread out and bud off new plants in bigger containers, so it's worth the effort to find a nice, big pot for them. You might ask your dad to buy an apple tree or something similar - get one that comes in a nursery pot and then you get a big pot for less than the price of a large planter from the garden store, and a tree as a bonus. If you search around you can probably find a large bucket that will work for a reservoir, or you can use an open container like a plastic wading pool. Concrete mixing tubs from building supply stores also make good water trays, and they're generally less than ten dollars.Interesting. It looks like I should also go for an oversized pot/tray. Is this correct. Thanks
~Joe