For most businesses, however, they don't know where to start.solana vs eth vs cardano,The total cost is more than 50%, and when the market competition is not fierce, the gross profit rate of Letao is only 30% (already high in the industry), that is, the loss is more than 20%; and when the market competition is fierce, the gross profit rate is less than 30%. It dropped to 17-18%, and the loss exceeded 30%.