now is the time i would say, having only T-locs myself i am staggered at how annoying the classic ones are to handle in comparison. i would not want any for free.
so sell them before everybody thinks the same way,
obviously there will always be a market for the classics, we are still in a "in between" phase, most users haven't heard of or used T-locs. but as it spreads the resale price of the classics will drop to a point where it is interesting again to buy something that obviously looks "outdated" and is inferior to "what's new"