Well Im biased, tell you that up front.
E Gleaner nice little combine, but overkill for 1-2 acres. Maintenance $$ will be much higher.
$500 seems high for an allcrop in that condition. But location of the country you are in makes a difference. Could be a bargain if on long island for example
new Allcrop parts are easier to find as long as I still feel lke providing them , but really not a "lot" of aftermarket sources.