I haven't looked too deep into it, but I guess you can sell the seed of the wallet. Since they are locked though it will require the buyer to be able to change the wallet seed so you're not able to re-enter it when the contract is released.
Go to Telegram and ask them in their channel, I'm sure they have a better idea of how it'd work.
Wow thanks for a super quick reply!
Yes that seems possible, I haven't touched the wallet to be honest and just found out about the backup file, that I also didn't do. Definitely thanks for your help and hopefully I found a buyer soon:)
Will also check them on Telegram to see whats up:)
Have a good one Bossman!