i have only $20 usd in btc you accept this? for 5 TBTC ? and make the deal now
How would that work?
Obviously he can't give you ALL the tBTC back, if he does some testing.
Because there are fees in testnet too
So you would only get back 5 tBTC:s minus testnet fees.
PS. While I understand you want them back, the collateral is awfully close to selling.