I probably wouldn't BUY from just anyone on kingsnake.com, but you can see a lot of the morphs and general prices on there too. This is the place to look through BP morphs, but idk where you'd go for cornsnakes.
If you've never had a snake before, I'd recommend maybe starting with one animal (probably the corn) and waiting a bit before getting the other. I'm not trying to talk you out of getting them, I've just seen a lot of people get super excited about snakes because they require fairly little space and attention and then get overwhelmed because they aren't really used to caring for them. I'm not saying you have to wait years or anything, just suggesting you ease into the hobby![]()
The reason I suggest getting the corn first is that they are more forgiving of husbandry mistakes than BPs, and it'll give you a good chance to get used to monitoring temps and humidity with a snake that won't freak out and refuse to eat because things are a few degrees off.