Borrowing one (assuming you can) and transferring everything over to DVD would be my recommendation.
If you can't borrow a Hi-8 machine, you might consider one of these places that does "video transfers." There are places that advertise "transfer your old films and memories to DVD" and such. I think they're like the Photomat places, or maybe even a "one hour photo" type place in the mall or a shopping center could handle it. I know some places do this sort of thing 'cuz I've seen ads in the yellow pages and also had flyers left on my car windshield.
I'd guess it's not cheap, but may not be as expensive as buying that Samsung Hi-8 recorder. Prolly depends on how much video you need to transfer.
This is all assuming, of course, that the material you need to transfer is not of the Paris Hilton or Tommy/Pamela Lee variety. :evil: In such a case, a commercial transfer service would obviously not be a real good idea (unless you want it all over the Internet).
Oh, and not to insult your intelligence, but did you try cleaning the heads and tape path on the old Hi-8 machine you have? (And maybe just getting it fixed could be cheaper than buying a new one.)