69 FB ad's $500 spent 59 shirt designs 19 days in. 1 sale HOWEVER, 14 shirts have sold through Google shopping, Teespring search and on Twitter. Therefore, I conclude that I made several good designs. So why are FB users not buying? The ad? The audience? Regarding ads, I've tried different image styles, ad copy and even copied formats used on shirts that have sold a lot. I don't believe it's the ad. Tried one IG ad but results were poor. Audience? I target a niche 'reach' pool of less than 400k. Often it's in the 100k range. Ad click is above 30%. 19 of the 69 ad's have total CTR of 6%-12%. Several designs have as nearly many 'shares' and 'comments' as 'likes.' (It is one of these ad's which sold 1.) It seems I've learned how to target an audience using FB ad's and appeal to their humor and taste with a shirt design. Yet, only one sold on FB but these same shirts have sold through other mediums. I don't get it. Lastly, I use the 'boost post' method. Not only is the post permanent, but this also generates the most shares and comments. The 'create ad' method yields the most link clicks. Nearly all traffic comes from mobile. What is my problem?