The series was on eBay a couple weeks ago for $31 + shipping. No bidders, so I'd bet you could contact the seller and make a deal.
The Annapolis Book Of Seamanship DVD Ser - ANNAPOLISDV - eBay (item 250582311366 end time Feb-22-10 16:04:32 PST)
Great minds discuss ideas;
Average minds discuss events;
Small minds discuss people.
The best minds discuss sailing.