Hi Woody
Thats a bit of a difficult question to answer!
As with any used item, condition is the main criteria that dictates price.
I'm no authority on used Toylander prices, but I monitored a few on ebay just before Christmas, and the price asked, and sometimes achieved, varied enormously, anything from £350 to £3500, but good usable examples seemed to start at about £750.
Less of course if work is required and more for the high quality concours jobs.
Not much of an answer I know, but keep an eye on ebay to see what is offered and you may get an idea. It's sometimes worth looking at ebay "completed listings" but theres nothing much in the list at present
Best wishes
Walter