[jimmyvalmer]

I wouldn't draw the line that high. Mortgages still make sense for less.

[tacostakohashi]

That's because mortgages are secured by real property that can be foreclosed upon in the case of a default.

You cannot foreclose on a business.

[jimmyvalmer]

Putting OP's "small side project" aside, anything, including houses, that can sell for close to half a million USD is going to involve lawyers who will ensure the seller is made whole.