Hi there,
You've hit the nail on the head I think, I reckon I've quite a poor understanding of what things are worth. I had it in mind that Swampertite could just be purchased with BP in the Ultra games. I'm new, as you say.
I don't really have rare stuff, but I'm pretty good at breeding things with 4-5 perfect IVs, that's what i'd been planning to offer, unless there was some species I owned that you didn't.
If you're able to offer me the Swampertite, that would be really awesome. Happy to offer what I can from my limited means, even if it's just something that costs a bunch of BP, or saving you some breeding time.
I don't know how arduous cloning is, if it's especially quick and they're available, I also had my eye on Lopunnite and Tyranitarite. But keen not to over-ask, even just Swamp would be brilliant.