On a whim, I checked to see if any of the series was available on Amazon. And it turns out that not only is the full series -- of 143 episodes -- available in 11 DVDs...but it only costs $9.99.
For some reason, they also show another complete set available, which comes instead in 18 DVDs, but costs $108. Maybe it's just me, but I think the $9.99 deal is better.
If you were a fan of the series, or know someone who might like it as a gift, you can get it here -- for almost nothing. Your friend doesn't have to know how little you paid. Maybe you can even drop hints that it was the $108 edition. As long as they can't count, and don't realize it's the 11-disc set, you might get away with it.