Verkkoshop till you drop.
If you see shopping as a fun activity rather than a necessity, you might sometimes shop till you drop.
This refers to shopping for.
Verkkoshop till you drop is a correct and usable phrase in written english.
It is usually used in an informal context when someone means they have been or will be shopping for.
Verkkoshop till you drop.
To shop till you drop is an american idiom which means to buying things until you are physically tired and cannot walk around the shops anymore.