Not worth your time, but if you REALLY have to get one from mexico, a lot of things have to go perfect.
1: have they posted pictures of the boards so you can tell if they're real?
2: If they look legit, google reverse image search that shit to make sure they didn't just use images from somewhere else
3: feedback has to be perfect, etc
If all that lines up & it's cheap, eh maybe. Otherwise not worth the effort. I went through this while getting my MVS carts & the time spent verifying things & the stress of it is just not worth the cheaper price most of the time. I wouldn't even buy from Italy. It's like buying something from Brazil. Just don't.