Try
Larson's . They are just off of I70 on the Youngfield exit. Across the street from Applejack liquors. They are showing $20 a day for a basic snowboard rental package. They have always been pretty good. There is also
Max snowboards otherwise known as Breeze ski rentals. They don't seem to have their Front Range pricing up. Really the Folks at Larson have always been pretty cool and generally have a great selection. I would check them out.