Very thoughtful, Kuba, and well found!
This appears to be the "classic" (original) Cargo, which has always been highly regarded. The newer model is the Cargo Evo with a closed "return" (handle) at the front and investment-cast lower mounting bracket instead of plate steel. The Evo version also has a redesigned, lighter and different mounting bracket for the upper adjustable stays.
I have a suspicion the Evo will eventually come to replace the classic once existing stocks of the classic are depleted. I have nothing solid to go on, but it seems unlikely the two lines will continue in tandem, and this might account for the price discount, which is very good indeed.
Best,
Dan.