By the looks of this chart, it appears the first week of sales for the 3DS were rather successful. With 214,821 being the current standpoint, it seems dropping the price for the Nintendo 3DS was the right thing to do in order to boost sales.
There should be a fine chance of sales for the 3DS being successful in other regions in the world. Especially with the release of the Flame Red 3DS in North America on September 9th. Within the next month we should definitely see some progress.