Does this laptop even exist?

Ok so, i went to my local computer shop and asked them for a good gaming laptop and they gave me two different laptop names to go home and research myself which are:
Lenovo Z500
and
Lenovo Y510(no P)
when i searched Lenovo Y510 i kept getting Y510P results so my question was did he just forget to put a p or is he just selling me a cheaper laptop?

The model name suffix usually has very little to do with the hardware performance and is more associated to things like the color of the casing or possibly a specialized option only offered by certain retailers.

He's going to sell you a Lenovo for gaming? Go get a referbished Alienware for the same price but 10x of a beast.

Not sure about the existence of this kind of laptop
http://www.sellalaptop.com/