I went to Glacier National Park last year with Cycle America and it was wonerful. It was a great trip.... not sure if the price range is what you are looking for. You can go to their website... www.cycleamerica.com and click on National Park Tours and you will see Glacier/Waterton in there.

I won't be going to Glacier again with them this year, but I hope to do another tour with them.

They did a great tour last year... you might want to consider it with them.