A couple of quick reactions, in the middle of a busy day at the office:

• Chuck and I have discussed a marketplace that would have a wide open format: want to buy; want to sell; want to trade; want to auction. basically, any approach that the participants want to take, within some broad limits of fairness, avoiding clutter, etc.
• in terms of dealers, I am not really worried about them snatching up pieces offered through the marketplace. typically, dealers like to buy low and sell high (to earn a profit), so they will not usually pay as much a collector / end-user / enthusiast.
• if someone wants to sell to a "friend" / OTD regular, they could post as "will consider offers above $XXX.00" . . . then they choose the buyer . . . right??

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: Why not do it in reverse and post a OTD
: subscriber 'wants' list? Regulars are known
: by the number of their posts (not sure if
: you keep a record of this) so sellers could
: just make offers to whosoever they liked.
: Dealers tend not to get involved in the
: 'enthusiast' postings or we could out them.