Ive had my F model for almost a year now and it has over 1000 rds thru it without a problem.
Mine was $399 shipped also and the price what made my mind up to try one.... I have $410 in it with the FFL transfer. Great gun for the price.
The only thing that I dont care for is the sights.. Id prefer a 3 dot styled sight.
Aftermarket support is growing for them... Kydex holsters and leather both can be found.
When you want better service from a online gun seller and someplace that actually will talk to you on the phone unlike "Duds" gun shop, try them.