200 - 600 £ worth of Pokémon cards for just 2.40?

So I'm in Poland rn for a whole month and it is my 3rd week I bought 3 for 12zł or about 2.40 £ which explains the odd price surprisingly I managed to get 200 - 600 worth I wish I could send a pictur just need to figure how to make the thing into a link so I can post it for proof.