Changing Stalk Switch Beam/Indicators

Hi,

Have managed to remove cowling via screw but wondering how easy or difficult it is to swap old stalk switch with new/ second hand.  

Didn't need to take off steering wheel, and have access to switch on Roomster 2012. 

If it's not too tricky I might get used part breakers and swap myself but if it's not an easy job I'll get my local VW guys to do it.

I'm electrically competent but more unsure of difficult of disassembly on the mechanical side.

Also anyone recommend where to buy new part with reasonable price ?

Thanks