Don't use it! It changed half of my prices then quit working and it wants me to pay to upgrade to roll back the mess this thing made! No support it's been over 12 hours with HALF of my prices changed!

Is a simple app, but will do the job. If you have multiple variants per items, it will save you tons of hours setting up sales prices and back. It used to take me hours and now I can do it in minutes. It take some time to update prices, so be patience. It will lower or raise price by %, fix amount or specific and can switch price and compare pricing.

I used this app to update our 'Compare At' price of nearly 80% of our store at once (tens of thousands of SKUs). Apparently we initially imported our product catalog with 0's instead of leaving the compare at field blank. Saved me DAYS of work.

Also, the app initially only allowed me to change the existing value, but not removing the value to leave the field blank. Contacted support and they worked out a solution for me after a few days. Definitely recommend it if you're trying to use your time for something better than changing prices.