MHEC’s computer hardware contracts are all the result of an RFP process; either through WSCA (Western States Contracting Alliance), or separately through MHEC. Every vendor contract page has a vendor purchase site where you can get up-to-the-minute pricing for specific configurations as well as purchase product directly.
Typically, hardware vendors provide special "bundle" pricing on configurations. These prices are 20-30% lower than their discounted educational pricing, and when combined with volume discounts can provide very cost effective purchases for your institution.
Several of these contracts also allow purchases by faculty, staff, and students. This can provide an excellent way to economize as well as get equipment that is directly compatible with what you have at work.