I sent 0.01587494 bitcoin with a 0.00000494BTC fee to an online market vendor. The transaction took 4 days to confirm by which time the market had cancelled the order. But it is confirmed now. This was over 3 weeks ago now but no bitcoin has come back into my electrum wallet. Do I have to do anything to get it back? Or will it eventually show up? Or is it in the vendors account or escrow? Any help would be really appreciated.

Here's the info from Blockchain if that's of any help.

Summary
Size                           226 (bytes)
Weight                   904
Received Time           2017-11-04 21:12:10
Included In Blocks   493094 ( 2017-11-04 21:12:10 + 0 minutes )
Confirmations           1871 Confirmations

How do the fees work in electrum wallet? With dynamic fees on, when the slider is set to minimum it's saying it will be 0.00172BTC which is like £8/$11. Is this how much you have to pay for every transaction!? Everywhere I've looked people say to check dynamic fees or it may not go through but this seems ridiculously high. This is my first transaction so I hope I'm being an idiot and doing something wrong.