OP should edit to add that the 30k figure is for the USA only. Likely the first week sales will be 35k for Americas, and similar for Others. We'll see in a week whereabouts it'll reach in Japan. But if it manages 30k there, that will be 100k from its first 'week'
Considering that each PSP:Go is sold at a (healthy) profit, and there is no known way to get games on it without paying for them, and this is good news and lots of $ in the bank for Sony