I bought a universal centre console box armrest and modified the wood frame and fixed it to lid screw mounts. Alot of trial and error, and its a bit of a bodge tbh but does the job nicely, the extra storage is nice and is very comfy :)
Think i would of just got one like in your picture to save the hassle now though, but didnt know about punto one at the time. You can also get universal in this style which i reckon could be bodged by using either the screws under rear ash tray or screws under storage compartment, it wouldnt be a straight fit and you would have to get a bit creative or if your brave screw into the centre tunnel. Im thinking along the lines of screwing a wood block to where available and mount
OEM is about £100 but i have had ppl say its a bit low