Shipping cost does not follow weight

[Kelvin Ong]

Hi,

I've set:-

Billing - Choice of range --> According to total weight

Fees by carrier, geographical zone, and ranges -->> as per attached screen shot

I've made test run and found that the shipping cost is max and not according to setting.

My question might bit confuse and hope someone can understand and give a hand on this.

[Kelvin Ong]

Hi,

While waiting for someone to reply, I've read on this -->> http://www.prestashop.com/wiki/Shipping/

It seems like I've followed all these steps in order, wondering if I've missed out somewhere.

[rocky]

The Wiki instructions are wrong. The ranges should overlap. For example, 0-0.5kg, 0.5-1kg, etc, not 0-5kg, 0.51kg-1kg, etc.

[Kelvin Ong]

Rocky,

I'm bit confuse.

(1) Wrong
0kg - 0.5kg
0.51kg - 1kg
1.01kg - 1.5kg

(2) Correct
0kg - 0.5kg
0.5kg - 1kg
1kg - 1.5kg

It is suppose to set as (2)?

[rocky]

That's right. The first number in the range is inclusive and the second number in the range is exclusive.

[Kelvin Ong]

Rocky,

I've amended it and made the test run. The result become:-

Item weight: 0.5kg

Chargable weight:-

0 - 0.5kg = 5.70
0.5 - 1kg = 14.00

The shipping cost become 14.00, by right the shipping cost is only 5.70 unless the item is more than 0.5kg. What should I do now? Change the item weight become 0.49kg?

[Kelvin Ong]

Rocky,

I noticed another problem.

Item weight:- 0.2kg

Chargeable rate:-
0 - 0.5kg = 5.70
0.5 - 1kg = 8.20
1 - 1.5kg = 10.70

Let say the customer purchased 5 units = 5 X 0.2kg = 1kg
So, the customer should pay 8.20 right? But now the shipping cost is 10.70

[rocky]

It looks like you want exclusive inclusive instead of the inclusive exclusive that PrestaShop uses. In that case, you will have to use 0-0.4999kg, 0.4999-0.9999kg, etc. Change the number of nines depending on how many decimal places you are using in your weights.

[Kelvin Ong]

Rocky,

Let say now I use your method, it will become.

New Method
0kg - 0.4999kg - 5.70
0.5kg - 0.9999kg - 8.20
1kg - 1.4999kg - 10.70

Old Method
0 – 0.5kg = 5.70
0.5 – 1kg = 8.20
1 – 1.5kg = 10.70

Item weight = 0.2kg X 5 = 1kg

By right customer have to pay for 8.20, but

Old Method:- PS will charge accordingly to 1 - 1.5kg which is 10.70
(by right should be 8.20)
New Method: PS will charge accordingly to 1kg - 1.4999kg which is 10.70
(the correct cost should be 8.20 for item not more or = 1kg)

Hope you get what I mean here.

[rocky]

It's difficult to understand. Hopefully, this will work:

0kg – 0.5001kg – 5.70
0.5001kg – 1.0001kg – 8.20
1.0001kg – 1.5001kg – 10.70

[Vegaanders]

Just to add to the confusion.

I have 2 carriers configured. One cheap that handles packages up to 5 kg and on more expensive that handles packages from 0 to 25 kg. But if a customer buy a product with weight 6 kg he can still choose the cheap carrier. This is a big problem. What can be done about it exept buying a module for 150 euro that noone in the forum have any comments on and that require core modifications


Regards

Anders Yuran