I filed mine online through the colorado government business site, took only a few minutes, I paid $10, and it was done. I was able to print a copy out and take it to my bank to set up my business bank account. I did not need an EIN to open an account, although I did get one later.
My sales tax ID was about $10 too I think.
@Kaylee, since I did my DBA online none of it was my handwriting, but I was able to print out a copy for my records that looks relatively professional. It doesnt look like my sales tax license or anything, it's just a plain piece of paper with text on it basically. :)