You can literally sell the same product at different prices with no other change. As long as you don’t imply that there are added features in the higher-price version, it’s not unethical. Big companies do it all the time; it’s how cell phone carriers, hotels, and airlines make money. To reduce confusion, though, it’s better if you can add something with real value to each higher-level version of the offer.
Should probaabably combine product colors and sizes, but add variety through pricing options
