You'll pay about 1000 QR for that... but if you have access to purchasing it in an other country, it could be much cheaper (in the US, same camera is only $200/750QR)

The prices vary a lot, depending on what your priority is (i.e. zoom, megapixals, msc features)... The shop next to Jarir has lots of Sony products (just go to the back, pass all the makeup and perfume). Can't remember what it's called, but just park where you would for Jarir and it's to the right.