Corn tortillas (used in making Oaxaca-style quesadillas) are available at international and Latin grocery stores, and if you live in a large Latin-American community like I do then you can find corn tortillas in bags of 20-30 for like $2 or less at major grocery stores. Flour tortillas probably won't work as well for this and definitely won't have the corn flavor and base. Never spend money on premade again! You can also control how large or small you want to make them (and keep them seasoned or not) not to mention salt content if you're watching sodium intake. 32 chips is all I could fit on my convection oven's cookie sheet so feel free to use more tortillas; the methodology is all the same. You won't believe how easy it is to get restaurant-style tortilla chips without any icky unnatural ingredients!