Just to add I have not wieghed any of my bats (that i use) in a few years, I rate the feel in hand (pick-up, how i feels when i swing the bat) and it is weird to notice there a 2'8 & 2'12 that feel equally good, some of it also has to do with the handle i guess. I always ask for 2'11 and 99% of the time it feels right, to be honest I am not fan of light pick up bats (just doesn't feel right) as I like bats that feel just a LITTLE heavy but not too much...
What I was trying to achieve was demonstrate how a vast range of weights work as long as pick-up suits the batsman, also another thing to note is I would have never purchased some of these bats if the correct weight was listed (would have missed some real crackers) but then it also makes me think how the correct weight would have felt like (I am also aware of the fact that some bats loose/gain weight where as others don't but all these have been stored in the same spot and in covers, all have been oiled well too)