I'll start by saying I'm a head and face shaver, so double my numbers if you want an apples-to-apples comparison to the rest of the folks here. It seems to depend on the blade. I can generally get 2 out of any blade. Astra SP I can get 3-4. Polisilvers, which I'm just using for the first time this week, it looks like I'll get 4-5.
On a side note, for a real analysis I think you would need to ask people how many passes they get from a blade, not how many shaves.
On a side note, for a real analysis I think you would need to ask people how many passes they get from a blade, not how many shaves.