I get mine in 1 lb bags (actually 500g which is like 1.1 lbs to be exact) and the cheapest I've paid in the past year is the following:
Chickpeas: 41 cents
Navy beans: 1.00
Yellow split peas: 93 cents
Black eyed peas: 79 cents
Brown lentils: 68 cents
I also buy black beans, red kidney beans, and red lentils, but I don't have prices on hand for those. In general though it looks I pay an average of 69 cents per pound which is about the same or a cent or two higher than what you found.