Coco, I have the same one that Redbird Girl has, bought it at Walmart. It works great. I also ran across another driver that has the same one and they claim you can brew the coffee while the truck is moving - that I never tried!
Also, I just saw a coffee maker at the J in GA, by Hamilton Beach, that has no pot at all - it makes 12 cups. The cost at the J was $35.00 but I am sure you could find it at Walmart-cheaper. I am thinking of checking that one out closer my self.