Hi princip welcome to the forums. I am no expert on European Bianchis but this looks to be a lower to midlevel model from the mid '80s maybe? the wheels look like they may have been rebuilt or replaced in the later '80s. I know in the US those Ambrosio rims were a cheap alternate to the pricy Campi and Mavic rims. what is up with the pedals? are they broken or some weird 'clipless' system?

as for a rough price? if you just bought it that is the price. the value of bike is determined alot by the market it is in and the season. here in So Jersey that bike in clean rideable condition might fetch $200 in late may but would have a hard time selling for $100 in November.

I do not think it is a rare or highly sought after model. it is likely something like a Sport SS here in the states.