Owning in another country can be complicated and confusing, and you don't have the same protection of the law as you do in the US.
Mexico is a VERY easy place to exchange into with a US timeshare, and it's inexpensive to rent there, so I wouldn't buy in Mexico.
Instead, I'd buy a US timeshare, that I would enjoy owning, and use it to trade into Mexico.
My advice for buying your first timeshare -
click here
Here are some questions to ask yourself before you buy - you can click the quote button and respond to them if you wish:
New buyer questions:
1) Where do you want your home resort to be?
2) Do you want to visit your home resort at least half the time, or do you want to trade more than half the time?
3) What are your 5 top trade destinations?
4) How many people do you usually travel with?
5) Can you travel any time, or are you locked into the school schedule?
6) Can you make firm plans 12 or more mos. in advance?
7) Can you vacation for a full week at a time?
8) How much can you afford to spend upfront, without financing?
9) How much can you afford to spend every year for a maintenance fee that will come due right after Christmas, and increase each year?
10) Are you a detail-oriented planner?
11) Do you understand that once you buy a timeshare, it may be very difficult to sell or give away, and you are responsible for all fees, until you do?