About 3 years ago, we brought a 46" TV from the States and saved about U$S2000. With the blue rate, I'm not so sure that makes sense anymore, especially for a 6 year old TV.
You have the airline charge (oversize $100 and probably overweight $100, excess baggage too?), tax, the hassle of packing and bringing it to the airport, and risk of damage which would not be covered. Is it dual-voltage? If not, you'll need a converter too.
Looking at some prices:
- Garbarino.com.ar: 40" Sony LED with 3D is $8499 (U$S 976) / 46" Smart LED Samsung is $9999 (U$S 1281)
- Rodo.com.ar: 40" Sony LCD is $5299 (U$S 609)
Get someone with a local credit card and you'll routinely get 20% off that price and 12 payments too. You'll have a high resale value too.
I would never bring a TV again. Just not worth it...