I think the change seems fair enough and captures the intent.

However, subject to one caveat, I personally am otherwise happy that 'anything' could go in the saleyard.

I mean, a member can list a whole lot of things as expressions of interest ("EOI") and then list prices later depending on interest level. If he/she overvalues an item because there is intense interest, it just might not sell (I believe members to be reasonably price savvy in this regard since this is a specialist Transformers board; if not caveat emptore). If he/she often comes up with EOI type topics but never follows through, members would be wise enough to stay away.

My caveat is this: that the saleyard should not devolve into an auction platform. By this I mean for example that an item is listed for sale at say $10. Member A is interested, and holds it. Member B comes along, thinks its a good price and really wants it, and offers $20 to the seller for the the item. And because $20 is still a good buy, Member A comes back and counter-offers $25 and so on.