This is why on our forum (cars, not bikes) we don't allow people to reply to ads - that has to be done by PM - that way it saves the seller getting a lot of posts discussing the sale item and how it's too expensive and how my mate Dave bought one just like to for a tenner last weekend....
P.S. It looks lovely. Wish mine looked as tidy. If it is CAT D, then the easiest way to put buyers minds at rest is to have the details of why it's written off and what the costs were to repair, and also have the receipts for the new bits/work done to show it wasn't smashed to fuck under a truck, and just needed a new headlight and exhaust, or whatever.