To find coupons for eBay is very rare, it is not often! But the site offers great discounts, especially now (for the holidays). Look in the search engines or coupon services like, retailmenot.com, 20off.com, coupons.com
I want to find Ebay discount code 20 off for dress?
https://www.ebay.com/deals?&_trkparms=%26clkid%3D2387302600702922383
Most of the daily deals of Ebay are electronics. So the easiest way to find ebay dress coupon is to google it. Also I often use coupon sites to help me save a lot of time and money.