We're in the UK, and charge for shipping by weight, so I'm listing all the products' weights and setting up a table. However, when I try putting a product in my shopping cart, and go to the checkout, I get bizarre results. A product weighing 500 grams, which should cost GBP 5.20 for shipping, came up as GBP 37.40. I tried changing the weights to decimal fractions of a kilo, instead of grams, and now the postage comes up as zero. I'm confused!
Here's my current shipping table:
0.35:4.10,0.75:5.20,1.25:6.20,1.75:6.90,3.50:9.30,4.90:10.50,7.00:12.50,9.00:13.70,19.00:15.40 (Weights in decimal fractions of a kilo, and prices in GBPounds.
I think I'm missing something vital! Can someone advise please?
Thanks.
ally
New 
