East Glacier RV Parks

I had the exact same issue with the KOA prices at St. Mary.  However, after researching the other options in the area, it fit our needs best.  If I recall correctly, our "Patio Site" was around $165/night before taxes and fees which is what we'd normally pay to be in a very nice Class A resort.  While this KOA wasn't that, we really enjoyed our stay there as on our "rest" days outside of GNP, we had plenty to do in the campground to keep ourselves and the kids entertained (store, playground, pool, kayaking in the lake).  We briefly checked the other parks nearby when driving to and from GNP and the KOA seemed to have the most to offer, confirming my research.  Some of the smaller parks in the area seemed tidy and convenient, but I didn't regret reserving the KOA.