Markdown Manager was eBay’s old tool for creating offers before Promotions Manager was launched.
Some features of eBay Markdown Manager are still accessible but they have been merged into Promotions Manager as “Sales event + markdown”, so you have to access them this way.
The markdown promotion type enables strikethrough pricing which lets buyers see a “before” and “after” price on your included listings, clearly illustrating the savings being offered. This is one way of running special offers and discounts, and a great way of clearing old stock.