I have yet to play them to verify that they function as they should, but I can say this about the physical condition:
Blazing Star= Mint+ overall with all items mint+
Metal Slug X= overall mint- overall, the cart is excellent+ on the back due to a few scuffs, but mint+ everywhere else, the rest of it is mint+
World Heores 2 Jet= Mint overall, all items are solid mint.
Obviouisly I am happy with the transaction (again providing that the games function well, but I've never seen a defective Neo cart and only heard of 2).
I am still feeling like I got lucky as I am the ONLY person with 100% of the game were like I was told the would be (Yes MSX is Mint -, but it close enough that I plan not to bitch).
WHEW!
For me it was a GREAT, GREAT transaction. Still I urge Florian to take action and refund people that did get so lucky.