For me, it would depend on knowing what the fork and rear triangle are made from. I never understood tretubi. Are the forks and rear triangle made from hi ten? If so, I would pay no more than $200.

This is why, instead of a bianchi tretubi bike, I bought a trek 600 in the 80s . I knew I was getting reynolds 531 main tubes and a tange fork with tange stays.

Having said this, I have nothing against bianchi. In fact, my bianchi tsx rides great. I also had an alloro from the late 90s---kind of nice, however, it was HEAVY. In fact, the year after my late 90s steel alloro was made, they started making them out of aluminum.