Suzuki gave £750 off that £ 8,799 price when I bought mine, and later increased the discount to £ £1000.
Given that the VAT of 20% is lost as soon as you drive it away then based on the fact that we are going into Winter, it is nearly two years old and has 3k miles on the clock, I would be expecting to get it for a bargain price if I was buying one from you.
On the plus side, I ride all year and the 650 Burgman makes more sense in the winter than a Sports Bike.
I would keep it!

Ken.
Experience is something I only ever get a second after I really need it!