Vet records. you don’t want flees ticks and a whole other ‘OMG’ in your home. Give it the damp paper taste if you see it in person.
(Flee dropings will disolve on the paper showing little specks of blood)
It’s up to you how much you wish to invest.
PS
If they show you paper work that says it’s a pedigree, tell em to do one (you can buy those kind of forms off the net)