We.are.comparing a high end to a mid end. The T2 is a better gun, but it costs almost double.
Except it only cost $180 more than the Sniper's $420 price tag ($600 for a one color T2). If you want to add on other stuff, it will of course cost more (Barrel kit, fittings, Aluminum Panels, etc.). But stock, a T2 isn't really that much more expensive. And worth the extra money too.