People pay upwards of 250 dollars or more for a lemon every year in the fall and it is chalked up to hiddur mitzvah. Nobody wonders why the lemons suddenly cost so much or why the lemon brokers are making so much money. Matzah is the same mitzvah, if you can’t afford the price of those matzos that come with every hiddur and chumra under the sun priced in, buy the less expensive matzos. You are yotze the mitzva just the same.
In fact, it is probably better than muttering about the cost under your breath while you are eating your matzah.