I get kind of tired hearing about shops in this way. They do offer a service, have premises to maintain, expertise (hopefully), and are bound by laws. So, as a consumer, you have some rights to go along with your purchase. Or you can ignore all of that, and take some hopeful shots in the dark, probably getting burned many times in the process.
Also, why have you jumped to the conclusion this cello is Italian, and not something from the Bohemian side of the border?