Hi, I don't know if Apple offers this scheme in US, but I bought an 5k iMac late 2015, fully specced and I saved 379.96 US Dollar (from £ conversion). There is this student education scheme, where you get a huge discount, if you are a student. You simply need to go the apple website, click "live chat" and tell the employee assisting you, which iMac you want and state that you are a student, after she/he asks you which university you go to, and just tell her any random university that is in your local area, and then that is it, no check ups nothing, he/she will then give you the link to the check-out page with a student discount (-379.96 US Dollar) + 3 years of warranty and free delivery = Profit.
Oh, and did I mention? You don't have to be a student, just lie. The employee will not check it, but in some cases, they will ask, for a screenshot of proof, so say to them "I got a student profile on my university webpage, and I got the details of enrolment" She will accept that, but at the end of the purchase, she will not ask you for the proof, my friend tried my approach, but he wasn't a student, he still got the student discount. = profit.
In my case, I was a student, but she never checked.
Hope that helps and good luck.