I really have no idea. The ballpark number that comes to my head is 50, but that's just a guess.
I usually have around 10 tins open at a time though, and I've been smoking a lot in the last 6 months, so maybe it's higher than that.
I'm just so grateful I've gotten a chance to try a ton of unicorn blends before they disappear forever.
I've smoked more cigars than I can possibly count though. When I was reviewing them seriously (not professionally, just hand-writing reviews in a book for personal enjoyment) I reviewed around 400 different cigars, and only reviewed one in about 10 that I smoked.