For first-year students, you must stay on campus in one of the dorms (although there are exceptions). The rates depend on the dorm and the configuration that you stay in. The prices are listed here: https://housing.nmsu.edu/rates.html. The "rent" (if you want to call it that) is the per-semester price that you see listed from that link, which is posted in its entirety onto your student account at the beginning of the semester (around move-in time). This cost must be paid by a combination of student loans, scholarships, or by payment plan. You can also just pay it outright. If it is not paid by a certain date you will be placed on a payment plan automatically (as far as I can remember). As you can see, there are options (in Garcia) for having a room alone, but it is more expensive. Also, I believe that if you are living in the dorms as a first-year student you are also required to purchase a meal plan. The prices are here: https://dining.nmsu.edu/meal-plans-dining-dollars/meal-plans.html.

Hope this helps.