A story about this — 5 years ago
I was intrigued by Buffy and thought that since the WGA was striking it was a good time to catch up on old series. So I asked for it at Christmas and luckily got it! I was a bit disappointed to see it was only 13 episodes, but then I bought Seasons 2&3 for cheap on boxing day so it compensated.
The first season is a mixed bag. Some episodes are frankly bad (the worst of all times clearly being I Robot, with the demon on the Internet, who is really dated) while some are quite good, like Angel. I liked the characters and the writing, but lots of plots and the general filming style felt like they needed to get a bit better before it was really good. I am currently watching the second season and the difference is palpable.
The DVD menus were pretty bad, what with having to select the language options on every episodes and to check every episode for bonus features. The bonus in themselves were okay, a bit sparse, but the commentaries were interesting.
So, I think it’s an okay buy, especially in the sense that it’s necessary to get in the Buffyverse. Don’t let the bad stuff scare you, it gets better!