A cheap bike in Mexico..?

[brclarke]

Hi...
I'm a long-time motorcyclist who has done some short-term tours overseas. I've rode a variety of street bikes, and currently ride a little Honda CBR125 in Canada. After talking with my manager, it sounds like I'll be able to take 4 weeks leave in February-March 2012, and I'm thinking of going to Mexico.

I have three options:
a) Ride or trailer my 125 down to Mexico in the middle of winter. Riding from Canada south could be terrible depending on weather. Trailering/shipping would be very expensive (say $1000 each way).

b) Rent a small motorcycle. The trouble with this is that any moto rentals I can find with Internet searches are Harleys or BMWs at $120/day. That's fine for a few days maybe, but I want to do as much riding in four weeks as possible - and I'd be happy to plod along on a 125cc rather than a big honking bike.

c) Buy a cheap little 125cc in Mexico. I think this might actually be a great option. You can buy something like a CGL125 or a YB125 for less than 20,000 pesos ($2000 US). The worry here is paperwork and registration.

So... what do you think? Does anyone know of some thrifty motorcycle rentals in Mexico? ...
Or is there a dealership in Mexico that is accustomed to dealing with us 'extrajaneros' who want to do a quick buy/ride/sell in a month..?