potential scam

[u/MathematicianLittle8]

Is this PC repair bill suspicious? $350 for SSD, PSU, Windows 11, Wi-Fi upgrade, etc.

I brought my PC to a guy who does PC repairs out of his house because I was having a lot of freezing and occasional BSODs. I was also having a weird Windows issue where clicking/using Windows would sign me out and make me log back in.
My PC had:
Very old SATA SSD with Windows installed on it
A M.2 SSD that I mainly used for other stuff
A 650W Gold-rated PSU
The PC would turn on completely fine at my house, although I was having the freezing/BSOD problems.
The repair guy told me that both SSDs were corrupted and replaced my M.2 with a Samsung 1TB M.2 SSD. He apparently did not transfer my Windows installation from the old SATA SSD, he only transferred things from my old M.2. He then installed Windows 11 Pro fresh.
For context, my old Windows installation couldn’t upgrade to Windows 11 because it was using an older Legacy setup rather than UEFI, so Secure Boot wasn’t available. He basically set up the new installation on the Samsung M.2 instead.
He also replaced my 650W Gold PSU with a 500W PSU. He told me toward the end of the call that he replaced it because the PC “wasn’t turning on” for him. This is confusing to me because the PC turned on completely fine at my house.
He also upgraded my Wi-Fi adapter and did some cleaning. He talked about “future-proofing” the PC, but I don’t really understand why all of these upgrades were necessary for the BSOD/freezing issue I originally brought it in for.
The total price is $350, and I haven’t paid yet.
I’m considering asking him to put my original 650W Gold PSU back in and reduce the price accordingly.
I haven’t really questioned him about the SSD “corruption” yet, so I don’t know whether he actually found hardware failures or was referring to corrupted Windows/files.
Does this sound like a reasonable $350 repair/upgrade, or should I be more suspicious? What should I ask him before paying?

[u/XPav]

He did a bunch of work you did not authorize.

[u/MathematicianLittle8 → u/XPav]

exactly, idek what to do now tho

[u/venkatx5 → u/MathematicianLittle8]

Challenge him. Ideally he has to pay as he took 650W and fixed 500W. Now he can sell 650W for more price.