Europe isn’t treated as one entity postage-wise, as each country maintains its own postage facilities. They do, however, mutually agree to not charge customs fees for online purchases within the EU, which would include such a service.
There’s more information on what is and isn’t charge here:
I thought most there business would be coming from pokemon cards now that there 10,000 collectors out there. How many pokemon cards are graded compared to baseballingtons.