Yes this version has a V shaped hull. All inflatable's have a V shaped hull, aside from Cat hulls.
A flat hull, is known as a flat punt.
The Quicksilver 380 HD is a fantastic boat, i'm sure many others will agree. But since your new to the inflatable scene, it might be worth your while to start a thread, and give user's a bit of info and listen to their reccomendations, to get a bit of an idea about what other makes/models are available that suit your needs.
The motor is a 2 Stroke BTW.
Can't comment on the price as i live in Australia, so i'm not familiar with your currency, and it's value. Aside from that, it looks well looked after. If your unsure about it's value, i guess all you can do is call around and get a quote for a new 380 plus motor, and then base it upon that.
Edit - auction ended whilst writing this post. Best of luck with your search for your first boat.