How much should a baby horse skull cost?

Basically at my local antique shop they have a baby horse skull on sale for £215, it’s missing the majority of its teeth but It’s been completely bleached and degreased so it’s 100% clean. I really want it but looking up prices online I can get an adult horse skull for around £150 - £315 from what I’ve found. If it’s a complete rip off I won’t get it, they’re also selling ram skulls for £200 but they’re tiny and missing most of its parts so I’m completely unsure.