I have seen that you can "sweep" the chips into Electrom - are there any fees for that? Thanks!
If you sweep private keys that means one extra transaction you may not need to do.
Since Chipmixer gives you private keys, you can import those into Electrum instead of sweeping, thus merging step 4 and 5 into one step.
So, I decided to use Electrum after all, but would I need to pay the transaction fee for the chips private keys import as well? Or importing private keys is free? Thanks!
Sweeping is transaction, hence tx fee.
Importing means you'll have a "new" wallet based on those private keys. That's for free. Obviously, when you'll spend the coins, that will be again transaction with tx fee.