Bargain and "Vintage" demand alot of time, $ and skill to bring them up to a level to enjoy with confidence ...I have restored many a "vintage" Ham Radio equipment, mostly Hallicrafters 1920/30's/50's and early 60's as well as my Scott 299...it is an effort not for the faint of heart...I always shoot for mint + conditions and it is an exceptionally slow and laborious process...
Chassis stripped, parts inventoried, sourcing new parts to replace known failure Components and components identified as suspect...and hardware/silkscreen/paint...then re-wire, re assembly, tune and test...
Is it worth it, for sure...I enjoy brining the old stuff back to life and actually using them...are they as "good" as equipment today? From a sound perspective, I think the vintage stuff just has different attributes of sound, a different caliber of sound...but be prepared for the upkeep and frustration of sourcing parts...
Good luck in your decision