Swampies are relatively common and easily obtained, either through zaps at the zapper or through the use of elixirs that run as cheap as 57k in user shops.

Like the pet itself? Trading for and selling pets is against the rules, so you'll wanna avoid that. The elixirs are very affordable though!

Here they are, listed from lowest to highest user price. This isn't always totally accurate but it's good for a quick fix. Link to subetalodge

Oh okay thanks for the information! I was actually unaware that you aren't allowed to trade and sell pets. I have to refresh my mind of the Subeta rules now! Thanks for the help. I now have a scribble swampie and working on a nostalgic swampie!