The DVD's worth it:
a) so you can see ALL the episodes,
b) so you can see it unedited,
c) so you can see it without ads, "banners", voice-overs, and annoying "split-screen" credits...
Got mine off eBay a few months back, dirt-cheap - eBay go through once a day, nuke the listings as soon as they find 'em, so a "Buy It Now" is the only way - be quick!!
Knowing that the listings will be cancelled, people deliberately make bids they know they won't have to honour - in one day, I saw copies at $35,000, $50,000, and $65,000!
Mind you, I still prefer "Division 4" and "Matlock Police"....