To my amateur eyes it looks like a pretty basic model which you`d expect for that price
Its a slightly strange set, for a couple of reasons. Its stocked by Argos, which tends to have slightly odd sniper models, often bigging up certain features, while being very quiet about the lack of others. So its a bit of a red flag. next, its a 50in Samsung. 50in Samsungs are made (there was a version of the H6400 last year), but they are unusual.
The thing is a bit odd in lots of ways. 6 series should be 3D, but this appears not to be, and normally have 3 or 4 HDMI's - this has 2. They should also be smart, and despite some blurb about a wireless LAN, it seemingly isn't. The refresh rate is also odd. Its PQI is rated at 500. The J5500 is rated at 300, and the J5600 at 400, so a slightly better picture than the average 2D Samsung. Its like a J5100, but with a different stand and a slightly better panel.
The price works out at about £400. I suspect the Samsung 48J5500 would be better value overall - currently £409 in the UK, with 3 HDMI's and smart. Yes, a slightly better panel in the 6100, but not up to the likes of the J6300. Frankly, I'd buy the 6300, because its a much better TV, and worth the extra £130.