Like HCH and Hoytgirl, I went on a DIY hunt in Colorado two years ago. I went with 2 buddies here from Illinois and we split the gas. Including tag, camping equipment(new and from garage sales

) gas, food, and other equipment it cost me only around $1,000-$1,100. I wasn't successful as for killing any elk but it was a great trip as far as I was concerned.........had a great time. I plan on doing it again either this year or next most likely, but will definitely hunt in a different area. If you have the extra money you might even apply for a bear tag(depending on bear population and success ratio in your chosen area) which is 1/2 the price of an either sex elk tag.........I could have easily scored on a beautiful bear while scouting at 15 yards.
If you DIY, prepare to do some camping away from your main camp for better chances of success I am told............and I believe it. Next trip that is what I am doing, some overniters away from main camp so I can get farther away. Spending 1/2 of your day traveling back and forth from camp is not good.