Replacing the drive in a Inspiron 7567

Hey everyone, I recently was able to get an Inspiron 7567 for a great price thanks to a family member switching to console gaming (silly peasant) but for some reason this one has a strange hard drive in it. He had the original solid state repaired and there is a now a 500GB basic Seagate hard drive inside that desperately needs to be replaced.

I opened up the laptop and saw that there is only the one hard drive bay which is a bit of a problem but I can make it work. What I would be looking for is a large solid state drive (preferably 1TB but will settle for a 500GB as long as it is solid state) so that I can partition it and install Windows, Steam and my games on that and use the rest as a normal drive. Can anyone suggest some good solid state drives that fit these requirements, and if possible a place to get them would be great :D Thanks in advance everyone. 

I was looking for a good deal on a solid state drive around me, and one of the results that came up was someone selling a nice 1TB Solid State Hard Drive on https://www.for-sale.ie/solid-state-hard-drive  and the seller was nice enough to help me get everything installed on it and even gave me some programs to make the drive perform better and monitor the performance. Cheers Mike, don't think you will see this but you are a class act mate. And thanks to everyone for the advice on here, made my decision a lot easier.