CA, when folks here say "I lucked out with the fit" most are speaking from a ton of experience. My LBS keeps all the measurements of my bikes on file. Whether a bike is on TE, Craigs, Ebay .... I can check against his measurements and think "sure, close enough for government work". not that I want/need another bike

But for a new or newer rider, one with some health concerns I sure wish he could try the bike or similar.