There was an attempt by CRKT to make a budget version of the Sebenza for Chris Reeve Knives. This was back in the mid-90's I think. The knives never actually came to market but for some reason you see them pop up from time to time. I think they couldn't meet the quality standards of CRK.
In terms of over-paying, that's hard to say. $90 is certainly way too much to pay for CRKT "quality" fit and finish, AUS 6 steel and Zytel handles. You're looking at a $20 knife by the sum of parts. In terms of the value to a CRK collector...well, that's down to the individual collector.
I'm a collector and it'd be fun to have a knife like that for the history involved, but I can definitely say at $90 I'm walking away and not looking back.
Edit: I see a lot of info came up after I posted, lol.