As I've already said, mine, owned from new, is similar mileage/condition and I would expect circa 20k if I was wanting to move it. If you aren't in a hurry you could obviously ask for more, but with some dealers (not the sheffield fairy story brigade) knocking out 1098Rs and Bayliss models around 22k, you can't expect private sales to pull the same as not even a short term warranty comes with it. As far as the extras go, we never really get much back for bolt on trinkets. The extra slash cut cans are worth a few quid, but only from a sell on perspective. The whole lot isn't worth £500-1k on top of the bike for most buyers, it is only what we have decided to do to add our stamp. You are better off removing it all and selling it separately. Sorry if it sounds harsh, but as an owner of the same bike I feel I can be a little more realistic. Ultimately it all depends on how desperate you are to shift it quickly.