My academic side is going to shine through briefly... You could *gasp* get them from the library. Almost any printed material or DVD is in some library, somewhere. With inter-library loan you can get whatever you want, for free, whenever you want.
While most librarians can theoretically help you and all you need to do is give the title, I find it much better to go in with the information on where what you want is located. Use WorldCat to find the closest libraries to you that have what you want. Seeing that you're in Boulder, the closest library to you with Season 1 is in Greeley, 39 miles away. So just go to your local library, get a free library card if you do not already have it, and submit an inter-library loan request. I've done this successfully for some very rare and expensive books I wished to read, rather than paying the several hundred dollars to buy a copy of my own.