Hey Brian,
Perfect spot too ask these questions. I doubt the gear is very sale-able. Everything looks to be in usable condition, but it looks well used by the previous owner. The board dates to around 1999.
I wouldn’t recommend any of the gear to anybody who wanted to try windsurfing for the first time. It was never beginner gear. This gear would unfortunately set a beginner up for a big struggle. If somebody has windsurfed in the past and wanted something to goof around on for fun a few times a year, this could be fun if it was free or nearly free.
To me, the board looks interesting, but that is only because I still keep a long board at my cottage for fun cruising in lighter winds. If your friend is looking to offload it instead of sending it to the dump, have him get a hold of me about the board. It’s not something I am seeking, but it may be decent enough to spare it a trip to the landfill.
You may also want to consider contacting the Cayuga Windsurfing Club. They are always looking for odds and ends donations.
https://sites.google.com/site/cayugawindsurfing/
I hope that was helpful and not too deflating.
Doug