I've been a salesman for 25 of the last 47 years and lesson #1 has to be learning to say no to bad deals. You want cash and the bike gone and while there has to be flexibility on both, neither of these people had a firm grasp on either, so I wouldn't rate them as buyers.

There are plenty of fantacists, chancers and time wasters and you've found two of them. It happens, don't worry.

Ive sold on E-bay and you get the lot. Gaddafi's gold, "My brother can sell it for you for a small commission", "Does the sale include the garage I can see in the photos"...Just firmly but politely tell them to go away, sit tight, clearly state what you expect/want and an actual customer will come along (unless the price* is wrong). Don't worry about the loonies, when they aren't bugging you they are trying to order Pizza in McDonald's or negotiate a discount with the tax man.

*Price has no relation to cost or value. Your old bike is worth what I can get another for that I view as similar. If I intend to let my kids ride it until its broken, the fact you spent a fortune on shocks and a big tank is meaningless. Adverts where they list what they spend just labels them as gullible. You set a price based on what everyone else is offering and know a cut off point below which you'll keep it or set it on fire. Unfortunately any overland features may have little appeal to most buyers.

Andy