The quote included the 60/12, a shoretel t1, 20 phones, ext and mailbox for them, personal call managers for all of them.
If we talk in general terms the average of the 3 different types of phones they have is about 300 dollars. Then you add 200 for a mailbox and extension, 125 for personal call manager. That comes to 625 per phone or for 20 phones 12500 (as mattray says) But that does not include the 60/12 or the T1 as mattray says.