First off, you are no more a weirdo than the rest of us...lol!
As to your questions:
1) I have bought, restored and sold numerous Weber Genesis over the years... just like yours. The model that you have, with the sear burner, should fetch between $350-400 on CL.
2) If you PBC is the older style w/powder coat finish, than I'd shoot for $150. If it's fairly new, with the porcelain finish, I'd shoot for $200, but would take $175 if someone made me that offer.
And yes, the two cookers that you are looking to sell do have a strong resale market... if priced right, I would expect them to both be gone in no more than a week or two