hi LT,
for weight charges...
Assume the total weight for all the items in the box is 1000gram. (u need to get a weighing machine to weigh all the items everytime..those kitchen scale... i purposely got a digital one.. so as to be as precise as i can... some kitchen scale for weighing flour kind.. can be 10-20g inaccurate..)
(see? spree org also must spend money to buy extra gadgets to be fair to spreeists...who's paying for the weighing machine??)
And shipping is US$100 (for example)
1000g = US$100 x exchange rate
1 gram = (US$100 x exchange rate)/1000
individual spreeist's items weigh together..
if her items is 250gram,
shipping = (US$100 x exchange rate)/1000 x 250
Hahha..feels like doing secondary maths...
I also distribute according to weight... cuz i feel fairer.. cuz my item may be cheap.. but heavy.. then pay lesser shipping...
Another person may be super cheap.. but like Jeans is heavy..end up pay lesser shipping...
so weight is the best....
Actually volume is the best... but thats too much hassle.. imagine taking a ruler and measuring length x breadth x height..
will go mad.. this is only a spree...
else need to use vernier caliper (how to spell huh... secondary physics!!)
so weight is the best easiest for everyone and it makes sense if u buy something heavier, u pay more shipping.. unless u go by units.... also not so accurate....
depends on what..
I use units for my pediped sprees... cuz the boxes are quite standard... not too many variations..
hope this helps!