^^^you can get 5's???? shit nobody round here does less than 8th's

but yeh, the weight/size ration of the bud all comes down to how compressed the bud is, if the bud is small, but when u squeaze it the bud is pretty rock solid(doesnt squash up in ur fingers) then chances are its been very well compressed and will be much heavier than it looks, where as if u have a big bud but its soft, then it will most likely be lighter than it looks.

but best way to work out how much to put in e.t.c is work on the weed strength.

for example, say i went out to buy some smoke and the weed was just average skunk, id prolly end up getting .5-1gramme extra cos the weed isnt all that strong where as if i went out n got sumthing stronger for example, white widow or ak47, id get slightly less, but the smoke is much stronger so u can use less e.t.c, but it all depends on what the dealer likes to do really.