Definitely willing to pay for it, but I cannot discuss price.
Would I be willing to pay more than, say, UDK? Yes, if the quality is there.
If it's able to produce something like this (that is, a little bit more basic than unity):
<img src="http://1.bp.blogspot.com/-VPgn3SUa9rY/Tz36PnV-i3I/AAAAAAAAERw/qNK0xm97cdY/s1600/Download+PC+Games+Alien+Breed+-+Impact+2010+For+Free+4.jpg" border="0" />
then I'd definitely consider paying over $200 for an indie version, and over $2K for a commercial version.
If we're talking about this
<img src="http://img.brothersoft.com/screenshots/softimage/0/3d_games_tvmax-30029-1.jpeg" border="0" />
<img src="http://blog.mozilla.org/labs/files/2012/04/no-comply.png" border="0" />
then I wouldn't be willing to pay anything for it, and I would think less of construct.
I'm not expecting the same level of detail as cryengine or UDK, of course.