if i remember right there were two + energy bows, both removed some time ago. 7-10 is the lower damage one. i haven't seen one sold in a long time, but i don't think you'd have too much trouble getting 100k+ for it, especially to a "collector." however, most of the people wanting one to use want the higher damage one.
[edit:] this isn't me, but just noticed
this thread. think thats the higher dmg one hes wanting though.