Seller wants to cancel after price doubled

Hello everyone,

I bought an SB02 case from a private seller on Cardmarket on May 6th for 4,7k. Shortly after my purchase, the price skyrocketed and the next available case is now listed at around 10,5k.

Now the seller refuses to ship and says he “must” cancel the order, claiming that he cannot find a suitable shipping partner. I do not want to agree to the cancellation, because when I bought it there were still several other options available around 5k that I could have bought instead.

Has anyone dealt with something like this before? Is there anything I can do besides waiting and refusing the cancellation?

This honestly hits pretty hard, because I now can’t buy the same case anywhere without paying more than double, which I simply can’t afford right now :(