Increase multistores prices

[Patrik Isaksson]

Hi im looking for a way to update the prices in a second store on a multistore runned solution
-increase store nr 2s prices with a certain %. 

I am running prestashop 1.5.3.1 - multistore - 3 stores. 

 

Main store has all suppliers and manufacturers and products. 

 

Store 2 uses same products and prices as store 1 - i want to use store 1ś products  - but x 1.8 increase on prices. Then set a discount to based to user groups and login. 

 

It seems i cant take price list from nr 1 and increase it in prestashop without going into hardcoding. We want to have as less hard coding as possible for easy upgrades later. 

 

Is there a module or a way to do this - i found this module  - is there more suggestions - 
http://addons.prestashop.com/en/bulk-update-prestashop-modules/5013-mass-update-price.html
 

Brgds.