Why wouldn't a gunsmith buy stuff on eBay?

We buy lots of stuff for our dairy/cheese plant business from eBay.

When I worked in a mechanic shop there were always parts on the way from eBay too.

The amateur gunsmith scene in the UK is pretty small and if you're buying and selling parts and tools, you probably already know who you're buying from or selling to.

It's easier just to speak to someone, bank transfer some money over, and they'll stick it in the post.