12a - Pricing items on Sale Posts
All regular Saleyard sales need to have a Price noted for each item (or Lot/group of items).
If you aren't sure of an item's value and don't want to feel cheated later, do some research on ebay first or ask in the Price-Check topic. It can be better to list at a high-end price and then discount it, or publicly mention that you will accept 'near-enough' offers (which the BUYER needs to publicly post).
Just be aware that unless you are just wanting to get rid of your toys in a hurry for cheap, selling as a Group Lot or Set might seem easier for you, but are less likely to sell, or even at a respectable price.
If you prefer an Auction format, you can do that here as well (see the recommended format below), but it is best to use a dedicated site like Ebay, and then just promote it in the ebay/dealer section.
Vague things like EOIs (expressions of interest) are not permitted in the Saleyard for single items - EOIs are only permitted in the Group Orders section to gauge the interest in a bulk order, and should only be done by someone prepared to go through with it.

If in doubt ask griffin what you can or can't do.