Got the following games for 30 euro's (6 euro each).

Super Mario Bros/Tetris/Worldcup in 1 cartridge
Dynablaster
Asterix
Batman : Return of the Joker
Tiny Toons

Really like that 3 in 1 cart  , have to say I had a lot of cleaning to do before they all worked correctly. Happy to say they all work great now

By the way Asterix does  play normally on my NES but on my Retrocon the ingame screen is f*cked up. Even on PAL mode on my PAL tv propably a compatibility problem that has to do with the NES on a chip I think.