I have purchased from them as well and agree they are good, but be sure to shop around. They have told me items were in stock and shipped only to find they were not and one time the order was canceled the same day they said it was shipped.
Many of the companies that sell on Experticity also give the same discount. Vortex is one. They can tell you if it is in stock or an estimate of when it will ship. Experticity will let you know when it ships, maybe.
GovX is another place to shop for the same set of people, but the discounts tend to be lower.
Dvor is another place I have purchased at good discounts. They tend to take awhile to ship and returns, even for a bad item, result in store credit. It is open to the public.
Anyone have another deep discounted sites???