Do you think when they realize it was fake they wont come back for the real one? Just dont do it as spanner put it.Simple.
If you hide your real stuff well enough you won't need to worry about buying fakes.... PS: I once hid some precious metals so well that it took me 10 years to find them again myself.
Don't hide your valuables in the freezer like this old geezer and then forget about them! https://www.abc.net.au/news/2023-01...elieved-as-gold-jewellery-recovered/101887344