Maruchan Instant Lunch, California Vegetable, 2.25-Ounce Packages (Pack of 12): : Grocery & Gourmet… for $4.64
$4.64 for 12 cups of this ramen with Amazon Prime/subscription. That's $.38/cup which I believe is cheaper than the cup versions in most grocery stores ($.50?).
Also, you can try the Jalapeno Cheddar for $3.88 with Prime/Subscription.