Jet is trying hard to compete with Amazon so I wouldn't be surprised if you catch a deal there. Thing is shipping might be slower. I don't know if the promotion still exists but they were giving 30% off coupons for new users. I bought a Shield TV for pretty cheap from Jet using one of those coupons recently.
Well I'm seeing that Jet will give you an addition 15% off your first 3 orders. You likely won't find a deal like that for a video game system anywhere else unless its like Black Friday or something like that. As such, it may be the cheapest way to get a PS4, Xbone, Wii U, etc. as well right now.