IDK if this is a troll or not, but as others have pointed out, most of these cards are virtually worthless because of the condition and the fact that they aren’t English. You might be able to squeeze a hundred bucks or something out of this. I admittedly didn’t look at all 400 photos, but I’m assuming the first few are representative of the rest.
It’s a shame you ran these over with your lawnmower, because some of them would be worth a lot if they were in even remotely passable condition.
Selling cards also takes time and effort. You need list to each card on eBay, answer customer messages and mail the cards out. There isn’t much here in terms of value. Might be best to just keep the cards and enjoy them