They're out there you just gotta look in the right places.
Usually ones with minor problems that dont effect engine conversions go cheap.
Theres plenty on ebay atm, a lib with broken reverse and good 172k engine for $300, running twin turbo lib for $400 missing front panes, one with faded paint $500, one with bad coil pack $500....etc etc
They usually always run fine its just other problems they go cheap for.
74 Germanlook 1303 SUBA-Beetle
Subaru EJ254 Boost R 17", 4 wheel discs, Topline suspension and A/C