If you're installing these speakers yourself, the local dealer will usually give you a big discount from MSRP, if you don't cost him a lot of time. Expect to pay more if you want him to do more than place the order.
Some manufacturers have dealer quotas, too, but I don't know which ones.
I like Proficient for basic background audio, 'contractor grade' speakers. Monitor Audio appeals to me for higher grade applications, for in-ceilings, but I haven't heard them.