Short answer - NO!
Somewhat longer answer - I bought my '75 Fuji new (in Oct '76) for less than $200 Yes, that'd be higher in 'today dollars', but still... I still have yet to pay more than $160 for a vintage ride that may- or may not have needed a bit of repair/updating. The reason I even throw that caveat in there is because I like my bikes set up a certain way, and not one has been! I change things to make it suit my style/preference. Those costs are not the bike's fault!
Of course, I have some 'more-than-basic repair skills and experience' so that helps...