After the $500 developer charge the net savings puts you about $100 less savings than the educational price on a mac pro with an 8800 gt. With the student developer hardware discount you are about $300 ahead since you only payed $100 for your developer membership. If you are a small business and buy a lot of macs you get significantly ahead of available non-educational prices by buying them in groups of 10 with the $3500 developer membership particularly if you want to send some people to WWDC or if you need code level support.