Hey guys. I found this guy who owns a local bike shop and he offered to sell me a Size Small 09 GT Gutterball, Brand New, Not Assembled for $375

This would be my first singlespeed/fixed gear bike.

I was wondering if this bike a good deal?
And if it's a reasonable size for me? I am 5'7

Here are the specs and whatnot about it
Full Detailed Specs

* Headset: 1 1/8" sealed bearing Ahead
* Grips: GT Wings freestyle
* Stem: Syncros FL
* Brakes: Dual pivot
* Brake Levers: Tektro
* Handlebar: Syncros FL alloy 580mm wide
* Nipples: Brass CP
* Spokes: Stainless steel 14 gauge
* Rear Hub: GT Mohawk High Flange Flip Flop sealed bearing
* Front Hub: GT Mohawk High Flange sealed bearing
* Chain: KMC
* Tires: 700 x 25c
* Rims: Alex Crostini R1.1
* Rear Cogs: 18t
* Fork: Straight blade design w/ Cro-mo legs/ threadless hi-ten steerer, rack and fender eyelets
* Pedals: Alloy Track pedals with steel toe clips and leather straps
* BB set: Cartridge sealed
* Crankset: Truvative Touro 48t
* Frame: GT Alloy Triple Triangle track frame with
* Saddle: WTB Silverado
* Seat Post: Syncros

Chainstay length: 395mm
Standover: 758mm
Horizontal Top Tube Length: 582mm
Seat Tube Length: 520mm
Bottom Bracket Height: 280mm