$200 is probably on the high side since I think they retailed new for around $350 based on one source I found. CV's are generally not in high demand among vintage collectors and tend to have the reputation as a speaker more suited to playing rock loud more than anything else. $50-$100 is probably a more realistic price if they are in good shape but you never know some people see a big woofer and go a little crazy.

As for packing up gear and storing it IMO speakers are good candidates for that since they have less to worry about while sitting. Electronics are a different issue as dust and moisture in even the smallest amounts can cause issues over the long run. I' d first determine if you have any stuff you absolutely know will never make it back to your main system and then sell it so you can purchase other gear or upgrade existing gear. Anything that remains after that I would wrap up carefully and but in boxes to keep it out of the elements. Periodically I'd take whatever is in storage out, give it a good cleaning and play it for awhile.