Sadly no, they're not the bits.
I would say that Jon Dunnyrail's offer for the maroon 0-6-0 is in the right field, I would have put £150 top end I think so, somewhere in the middle would be fair.
I would have thought about £200 as a starting price for the Accucraft green diesel, you might get an offer just below.
Are you familiar with the messaging system on the forum? Jon, Zerogee who commented earlier in this thread will be able to put a value on the LGB white Stainz loco.
The caboose with the missing bits, I'd go £25.
And yes, the difficulty is where the people offering the advice may be the people who are interested in buying, but none of these items fit my theme, so I'm not setting myself up.