I think the retail on it is $475 so street price would have to be about $400...nowadays you'd be lucky if you can find anything let alone at or above msrp.
From what I've seen there are more positive than negative reviews out there on the nano. I am getting mine by the end of the this week and ill be happy to offer up my personal opinion. Key thing regarding my opinion, I won the nano in the 2012 FTF Giveaway this past December, so I'm relatively unbiased that particular pistol.
SIG 1911 .45 ACP
SIG P229R E2 SRT 9mm
Beretta BU9 Nano 9mm
Beretta 84FS .380 ACP
PWS (Primary Weapons Systems) MK114 5.56 NATO