Feature request

At this time for all goods in store only one string for price - "each".

But goods in store may be different.
Eggs are sold by ten items (one package).
Wine is sold by bottle and so on.

We extremely need to choose string for each product from some list.

I this is wine - let it be "for bottle"
If this is eggs "for 10 items"
if this is meat "for package" and so on....

In other language this is more necessary....