Newby looking to swap waist harness for seat

Hi Folks, I"m a newby looking to swap a 2013 Airush XL waist harness for a XL seat harness. I have heard that it is common for folks to progress to a waist harness as there ability increases so I assume there must be someone looking to trade up? Sorry if this is not in the right place in the forum but I couldn't find a swap section :-).
Call or text me on 0417952563. I am in Perth WA.
Cheers Simon

Or you could pick someone else out of the phone book who is not into kiting :-)