NGP ( PSP2 ) Cost to Be $250 and $350?

From the time when NGP was announced many people was curious - what will be price for new Sony's portable gaming console ( PSP2 )? How much should we strip from our lunches to afford this cutie, when it will be released? Right after NGP presentation some people was scared that price for such device will be too high - around $700, like PS3 was by the time of it's release, but later experts agreed that NGP cost will not be too high and for platform success should be around 300-400 USD. Whops! Kotaku finds interesting survey about NGP. $250 & $350?..

As already has known - there will be at least two models of NGP: one with 3G module ( premium ), and one without it ( cheaper, of course ). Both models will have Wi-Fi. And there is new information about price - just recently research firm Toluna conducted survey ( sponsored by Ubisoft ) among american customers, with at least two questions - how likely they will purchase NGP, if retail price will be set at $350? Next question, however, asks about cheaper model without 3G - how likely they will purchase it, if it will cost $250.

So I think we can assume that such a big company as Ubisoft not likely will conduct a survey with random numbers, and probably Sony shared with them some information about actual price planned for NGP. Quite likely it's real costs, however, they can be corrected in some directions before the release, but corrections will be small. So there is estimated price for NGP: $250 for base model and 350 $ for premium model with 3G.

Update: Latest info on PS Vita price for US and Europe.