Sadly I drowned my trusty 2015 15" MBP touchbar on holiday in the summer. I put it into a local shop for repair, who performmed a water treatment process, afterwhich they tried to repair certain items that they said were registerring as shorted. After about four weeks they called me to say they had no success and that I could pick the machine back up.

Now i'm not sure what to do with it. The shop said the screen, keyboard and lots of the internal elements are in perfect working order so they offered me £250 for the faulty machine. They did say I would likely get more flipping it on ebay, but as it contains private information on the HD i'm a little nervous selling it without wiping it first. The shop said as the logic board is fried, and the drive is linked to that, it would be impossible for anyone to retrieve the data.

What are people's thoughts on the above? Would people feel happy selling a faulty machine to a random person online without being able to wipe it first? Or are there steps to take the mitigate the issues?

I've had to take a massive financial hit replacing this machine so anything back would be massively apprecaited.

TIA.