Have you checked your card? Has the payment gone through successfully?

I bought a 2015 for $110 6 months ago, so probably less than $100. It’d be worth more to keep as a backup if it is in working order versus selling it in my opinion.

iCloud locked. You cannot use it until it gets removed from that account. Get the original owner to remove it or buy a new watch.

An issue with the flex cable that goes between the display and logic board. This usually requires a complete display assembly replacement, but depending on the model the replacement may cost more than the device is worth making the repair not economically smart.

Hardware issue with the camera module. Not worth fixing as the phone is incredibly old and does not receive software support anymore.

You didn’t get a faulty product if it was working fine before you spilled water on it. Have fun, no one ever will honor any warranty on a water damaged device. Take accountability for spilling the water and pay the money or deal with it as is.

You can’t even install windows natively on an M series processor mac, so the performance is impossible to measure.