There are only two types of redi-jects in Mexico. Sustanon 250 by Organon, and Deca 50 by the same Co. The Sust is overpriced. It used to be cheap once upon a time(I was getting it for $7.50/RJ when I first dicovered TJ), but in the last two years has become overpriced, especially when compared to the high amounts of Veterinary items available. The Deca is only 50 mgs/Redi-Ject, and comes in two to a box. They are around $17/box in TJ last I heard. A ripoff.
How long are you going to be in Mexico? If we are talking a week or two, then don't waste your money. You won't get much out of two weeks on AAS therapy imo.