Hi,
Could anyone tell me what is the best way to show the prices below on the products page.

Users 1 YEAR 2 YEARS 3 YEARS
1 User £14.44 £21.25 £29.74
2 Users £19.54 £28.90 £39.94
3 Users £23.80 £35.69 £50.13
4 Users £30.59 £45.89 £64.58


I tried creating 1 year, 2 Year, 3 Year attributes
and
1, 2, 3, 4 users options

Zen cart config shown below

Attribute 1
Subscription Period
Option name Option Value pre fix price
Subscription Period 1 Year + 0.0000
Subscription Period 2 Years + 6.8100
Subscription Period 3 Years + 15.3000
Attribute 2
No. of Users
No. of Users 1 User + 0.0000
No. of Users 2 Users + 5.1000
No. of Users 3 Users + 9.3600
No. of Users 4 Users + 16.1500

The problem is when calculating the total price
1 year, 1 users = £14.44 (Default price)
1 year, 2 users = +£5.10 (which = £19.54)
1 year, 3 users = +£9.36 (which = £23.80)
1 year, 4 users = +16.15 (which = £30.59)

So far so good. Now...
2 years, 1 users = +6.81 (default price +6.81 = £21.25) which is Okay
2 years, 2 users = + 6.81, +5.10 (which = £26.35) --- the correct price should be £28.90
etc


So how do I configure the product in Zen cart to show the correct price using Attributes and options combination?

Thanks