Merchandise and promotional items may or may not have much interest. What is being promoted is vital, but the most important factor is the condition. For these collectibles, vintage condition is paramount. If items are boxed or sealed, they should remain so. As soon as they have been handled, their value plummets. Damaged items are of negligible worth.
The value of ads and flyers for items associated with television depend on the age of the ads and flyers, what is being promoted and who is associated with the promotion. Collections of ads and flyers that center on a single program, and that create an historical document of the show are in demand. The condition of the ads and flyers is quite important, so proper steps should be taken to protect any items of this nature. The more they have deteriorated, the more their value diminishes. Autographed ads and flyers have greater interest than those that are not signed