how to modify product prices by percentage

[superdre]

Hi! i wonder if is there a way to modify product prices in a global way. Let´s say i have entered 30 products each with its corresponding price but now i need to adjust their price in a 20%, is there a way i can do that without the need of modify one by one?
thanks in advanced!
Roxana

[mmbax]

yes i too would like to know this!!! I have searched everywhere but nothing close to a solution. I didn't think it would be such a hard thing to do.

[jenkinhill]

I have always used CSVI to apply across the board price increases, since I keep all products on an openoffice calc spreadsheet.

Some people run an SQL query on the database to do this, but this means giving the store owner phpMyAdmin access where they might cause a lot of damage.

[mmbax]

also i have products with dropdown lists for sizes etc that I need to adjust the price by percentage using a dropdown. Is this possible?