Looking at picking up this ‘79 cx500. Owner has it listed for $1400, but the bike doesn’t idle below 2000 rpms. Easy fix or not worth it?

https://i.redd.it/uxhksklkzu131.jpg via /r/CafeRacers https://www.reddit.com/r/CafeRacers/comments/bvt0cl/looking_at_picking_up_this_79_cx500_owner_has_it/?utm_source=ifttt