the first one that popped up to my head is Cardano (ADA). With 95% down from ATH and great team behind it, this one has great potential. Now I realize you probable meant some low cap gem, or something. But I had to mention my favorite project 
Well OP is looking for cheapest coin and thats all that matter,because like you i want to bring cardano also as thos cryptocurrency had already reached the bottom and were only waiting for the hypeMaybe since Op is looking for cheapest value then he might consider INS (insular)because this has a cheap price but promisingly has a future potential