This deal will never be a "steal", don't kid yourself.
I mean... I guess it depends how you look at it. People said that about Stamkos. Assuming 5% salary cap growth year over year (historically, even counting the 7% loss from 11-12 To 12-13, cap has grown 5.6% year over year since 05-06), in year number 4 his cap hit is the equivalent of 7.325 today. In year 8 it's the equivalent of 6 million today.
If you consider his talent growing in that time too, is argue he projects to be a steal by year 4, and potentially highway robbery in year 8.