The least expensive ways into PCP (at least as I see it, and in the US):XS60C PCP (Flying Dragons PCP): $165. Really nothing much to do but fiddle with the trigger and perhaps set the supplied striker spring screw. The gun and a pump $305. Been using one of the pumps for a couple of months without a problem.Discovery PCP. Is a whole sub-culture of Disco mods, custom parts if any are needed. Believe it or not, lots of Disco owners seem happy with them just the way they are. About $400 for the gun-n-pump package.DIY QB79 HPA conversion, Basically a QB79 plus an HPA bottle. A bit of a learning curve to get it leak proof and running right, but think the gun/HPA tank/ Pump would come in at about $385-$405.HiPac conversion of a Crosman Custom Shop 2240. If you avoid all the BS and just stick with the basic gun, think the total for a HiPaced 2240 would be something like $240-$250. Add a pump, and are closing on $380-$410. Be aware that getting a HiPac to seal and run right can be a steep learning curve.Of the four, if you’re going to use a pump, then the XS60C PCP (it’s very easy to pump a small volume to 1500psi) or the Discovery (pumping 135cc’s to 2K isn’t a chore either).