Finding forever is my favourite so far! The beats are pretty good, to be honest Stargazin wasn't really my taste but the others are good! Selling these beats or any beats is a different thing to be honest. It's more likely to have a good marketing strategy instead of making the hottest beats on Earth. Of course the quality counts as well but I know many other beatmakers who makes barely even okay beats but they make 100 USD+ a day while others (count me in as well) making better than okay beats, at some point, great beats BUT because of the lack of marketing, we don't sell that much. I'm working on it to make more and more sales per day.
If you want to sell them, go ahead, just one tip, if you are just starting out selling take MOST OF YOUR TIME studying online marketing and don't count the cost! These were my biggest mistakes, because I could hit TOP 100 on SoundClick 2 years ago but I was keep counting the cost. Sorry for the personal, good beats, keep progressing and thank you for your feedback on my beat!