Nowhere local stocks the parts to repair most second-hand items. Parts for older items are often hard to find because they are no longer made. I mean, you’re replying to someone who builds repairable versions of such items. Why do you think that is necessary?
Do you have the skill-set to do as they do? I do, and yet, I assure you, skills, a 3D Printer and a friggen machine-shop at my disposal can only do so much to compensate for a supply chain that has been absolutely gutted and continually re-worked to force consumption, and of products from the far end of the globe, at that.
Location?