ESS AMT 1D: sell for parts or attempt to restore?

I recently traded for a pair of ESS AMT 1D floorstanding speakers. The air motion tweeters on these work very well. Problem is one of the woofers has come seperated from its surround. The my eyes the surrounds are not original but newer foam versions. The cone material is a hard plastic like material. I would try to re-glue but not sure what adhesive would be appropriate to use with the hard surface cones. My question is: as I am likely to eventually resell these speakers - should I have the woofers re-surrounded (my guess is $100 worth of cost) and sell as complete speakers or should I just remove the tweeters, crossovers, passive drivers, etc. and "part out"? Of course, third option would be for me to try to obtain an appropriate surround and attempt to redo the surrounds myself. Question here would be what type of glue to use with these cones. Let me know what you think.