Last week I purchased Breastplate of the Final Defense (level 90 requirement) for 1.5 million gold. My character is currently level 80. Once the item was delivered to my mail it became warbound. I’ve purchased other boes from the auction house & they didn’t become warbound. I didn’t have the appearance of either item. The boe that cost 1.5 million gold automatically saved it’s appearance, while the other one did not. The other boe that wasn’t automatically added still says “you have not added this appearance” Since the appearance was added to my character it became warbound. While the other level 90 boe was not automatically added to my appearance.