Another dirty trick is insisting it's the same so they can say refund is possible but returning fee is on your own cost. They know how expensive that is so they force you in a sneaky way just to accept it. For European that's totally f*cked up because they won't reimburse the VAT + Duties on top of the shipping fee for returning the set. They know exactly what they're doing.
Well, you didn't pay your VAT + Duties to the retailer, so of course, the retailer is not going to reimburse them. You pay VAT + Duties to your national Tax Authorities, and this is where you can reclaim the VAT + Duties (though you have to do some paper work to prove that you exports the goods).
For example, see this page of the Dutch Tax Authorities (it's in English).
I hope to save enough to buy a nice chess set!