Ha Ha Ha Ha (& LOL laughing out loud.); You have answered your own question. “IF” we could make it ourselves?! Now. I’m not justifying the sometimes exaggerated prices for a Pound of Matzohs. But, in spite of the fact that there are only Two ingredients. Flour and water. But there are so many halachos and rules and regulations and Chumros and Minhagim, that it takes great effort to prepare the process of baking Matzohs for Pesach and you have to always be on your toes. So, a higher price is justified.
