If you are selling your plants retail - face to face where you get a chance to talk to customers, grow a lot of your favorites. Customers will ask you what they should grow. 9 times out of 10, they will purchase what I recommend - which are my favorites. They might have wanted a red round cherry tomato, but after talking with them, they'll grab a sun sugar or black cherry. Also grow some of the better boys and early girls to appease those that like their red, round hybrids. If you are selling wholesale - the store should have a list of what they would like.

I swear there was a list of the most popular varieties of everything (tomatoes, peppers, eggplant, etc.) but I can't find it. A quick search at Daves garden came up with a list of the most reviewed. Might help....https://davesgarden.com/guides/pf/finder/index.php?sname=Tomatoes

Heirlooms were always my best sellers. Sold tomato plants in 4 packs. Basil does very well with the sale of veggies. seehttps://theherbladyblog.wordpress.com/2017/04/10/my-herb-nhow-to-grow-basil-from-seed-to-market-packs-whether-you-are-growing-for-market-for-personal-use-or-as-a-fundraiser-growing-basil-had-been-one-of-my-most-profitable-herbs-that-i-grew-when-i/