Native tokens have to be accompanied by ADA. So, they do not really lock ADA that already were in your wallet, but they *come* with ADA (which are then more or less locked to them). And if you send them away, you will – again – have to send ADA with them.
You can partly unlock ADA, by putting more native tokens on the same UTxO (sending them to yourself in a single transaction), because one output with several native tokens requires less accompanying ADA than all the tokens in separate transactions.
Native tokens have to be accompanied by ADA. So, they do not really lock ADA that already were in your wallet, but they *come* with ADA (which are then more or less locked to them). And if you send them away, you will – again – have to send ADA with them. You can partly unlock ADA, by putting more native tokens on the same UTxO (sending them to yourself in a single transaction), because one output with several native tokens requires less accompanying ADA than all the tokens in separate transactions.
My opinion is 9 usd can be seen