adam,
i spoke to a semi-local bee keeper yesterday and he recommended Weavers down in TX:
http://www.beeweaver.com/
it looks like they are sold out for 2014, but i saw you mention you have mason bees on the way for this year.
i think this is where we will order from next year.
the biggest issue the guy told me about was the shipping of the bees. he says some people order bees from further east (GA) and sometimes the bees arrive dead based on shipping time / transport.
he did mention that there are some bees sellers in CA that might be better for the western slope guys, but didnt mention a specific place. if you want i can ask next time i stop by.
hope this helps.
http://www.cloud9farms.com/ - Southern Colorado - Zone 5 (-19*f) - 5300ft elevation - 12in rainfall plus irrigation rights
Dairy cows, "hair" sheep, Kune Kune pigs, chickens, guineas and turkeys