I found a touchscreen for £20 (about $30) and it was a quick and easy process to fit it once it had arrived. I describe the whole process and where I got the touch-screen from on my blog at WorkingMatt: Replacing Android Tablet Touchscreen
I got one from China for about $24 including shipping. Replaced it with no problems and it works. Would I do it again? No. Honestly, take the money you will spend on this tab and put it toward a legit real tablet. Once you get the real thing you won't be satisfied with these WM8650 cheapos.