I traded my crimped Beta Time Twister (N/M (not including the crimp) also with no whitening in the crimp) for 3x Bazaars of Bagdad!
I thought it was a great deal, but a lot of other people told me I could of got a lot more for it.
This was about 7 months ago now ...
I was really happy with the deal at the time, and now that I look at it, I am still happy with the deal.
In my eyes, the card was damaged, and the crimp wasn't something very significant.
But the other person really wanted it and collected crimped cards.
So all is fair if both parties are happy with the deal!

EDIT:
So basically, to answer your question ...
It's value will depend based on the person looking for those cards ...
Gunslinga off MOTL is who I traded mine too ...
You might want to consider giving him a PM because he collects crimped cards ...