Shopware Expert to edit Data Feed

Hello,

I need someone to edit my datafeed in Shopware for Idealo to fit my needs.

Some fields need to be added.

One fields shipping needs to be added according to logic. If price smaller than 50 then shipping= 4.95 else 0

Also price needs to be price * 1.19

Can you do this if else and math operation in feed directly or would you need to touch the code fo the shop?

Thanks