Don't take my number of 10 to the bank! I'm sitting at work knowing my tin and tubes are on my basement shelf in the Bike Junk Room. I found the price per tire install to be much lower for the tin of Vittoria, even at LBS prices. I just don't remember all the details.

I'm the kind of engineer who remembers how everything works, but doesn't memorize the details, at least not after I need them. I also think the Vittoria tin had a mass printed on teh label as well. If not, use Oldyellr's number of 0.7 g/milliliter (the 0.25 liter tin holds 175 grams, which is 7 tubes at 25 grams per tube). So I'm even wrong about the 10.