Comparison Shopping Engines
CSE = Comparison Shopping Engines
Price Comparison Sites
Price Comparison Shopping Engines
Prices Comparison Websites
Comparison Shopping Websites
Comparison Shopping Sites
As so often in online marketing there are tons of different wordings out there, which is just natural as we are still an evolving "science".
And in german CSE are called "Preissuchmaschinen", don't try to pronounce that! PSM is the most used abbreviation for that term in Germany, because even germans don't want to say that word every time they refer to this online marketing channel.
So - in my world i'll try to stick to the abbreviation CSE for Comparison Shopping Engines for the sake of sanity :)