I doubt anyone here has experience with that species. Where is the shop located?
Edit: Sorry, I tend to get ahead of myself. I believe only 4 species of Brookesia have quotas and this is not one of them. I can't recall ever seeing or hearing of any outside Madagascar.
Your shop has no peyrierasi. Just 4 species have quotas and those are always the same, thieli, superciliaris, stumpfii and therezieni. Thats it. So there are two options now: First, the employees at the shop had no idea what they got, they googled Brookesia and thought that they look similar to the ones they got in. Or secondly: They want to cheat you.