My friends in São Paulo just did that with an iMac - bought it in Arizona during their Christmas trip to the US, declared it at Guarulhos airport, paid the import imposts and still came in with a huge discount to the local retail price.
Cost of flight to AZ + Cost of iMac + Cost of Imposts was a huge discount or just the Cost of iMac + Cost of Imposts?
Including the airfare and import tax, it's still cheaper.
Yeah, still at least a headline discount of 20-25%. And they were going to AZ anyway, so it felt like 40-50% to them. Everyone was wearing new shoes too, prices in the US are significantly cheaper than in São Paulo