aliennationman wrote in Is there any intrest in TSR/ral partha miniatures?:is there any intrest in tsr/ral partha miniatures? closed boxed sets?
Is there still a market for Ad&d books anno 1995 -2000 ?

Using the "sold" listings on eBay is a good way to determine the current value and level of interest for most items.  It does not work well for super rare items that rarely sell on eBay, for example. But for the items you mention, you should find plenty of sales data which will tell you what you want to know.

aliennationman wrote in Is there any intrest in TSR/ral partha miniatures?:suppose I want to sell several dark sun sealed boxed sets, would this be the place?
thank you!

You can offer them in the Classified section if you want to, and you might get some interest, but my guess is you'll make more money by offering them on eBay.  If you decide you want to sell anything here, make sure you post good pictures and offer complete descriptions.