Yes that would be cool. I am myself have for a long time been thinking about creating an additional shop with electronics.
So far me the EU Energy Label law deterred. For all sorts of things, at least in Germany, this label has to appear on the product page near the product image (not in the picture gallery).
Unfortunately, this starts with light bulbs, the larger devices such as monitors, refrigerator, washing machines, etc. it is mandatory anyway.
Edit:
I dont know, how many retailers this option need.