QUESTION: Free shipping bulk revise adding shipping cost into item cost

[gorillaautopartsinc]

Hi everyone.

I want to be able to implement free shipping to my 4k listings but if I do I will be losing a lot of money on the shipping costs. Is there any tool / way to bulk revise my listings to add the current shipping price into the item cost? 
Thank you in advance for your responses! 

[phcd1 · Accepted solution]

You realize of course by changing your listings to "Free Shipping" you can't recover your original shipping costs with a return don't you?

But to answer your question in the seller hub you can select multiple items and do changes.