I'm with Clyde on this one.
I live in Mexico... 13000 pesos for a complete 2003 NRS is a rip-off in the US, but sounds reasonable around here. I'd have to take a look at the bike.
Maybe you could negotiate a little. Never pay an "asked price" in Mexico as rebating (right word? When you argue about the price looking for a reduction) is a common practice in Mexico and sellers commonly inflate the price a little as the first question a buyer ask is "is that your best and final price?"
I don't do that, but many people do.
That said, you'll be better off buying a used/complete bike in the US and bringing it here. If you have a relative or friend coming to Mexico, you'd rather pay him to get exactly what you want.
Availability is another problem around here.
The inflated prices come from the fact that bikes are outrageously expensive from the LBS here for several reasons.
My buddies and I prefer to bring the bikes in from the US instead of buying around here. Off around 10 of my riding buddies, only two of them have bikes bought domestically and they're low end'ish.
Maybe it's more than you wish to spend on a bike, but the brands that are reasonably priced here are Cannondale, low end Giantsand oddly enough, Santa Cruz. All the rest are plain too expensive.
As for components... Shimano and Fox have similar prices than those of the US. All the rest become just too expensive.
I invite you to come to the Mexico board... you'll be more than welcome. Also, you can cross post your thread there.
Let me know if I can be of any further help.