I've been looking for a deal on these speakers for a couple months now. While not the best deal ever on these speakers, this is a pretty decent drop - I'm in at $120. I've auditioned these and, while they're not as good as their Reference Premiere line, they are very good for speakers in this price range.
Klipsch seemed to do some good discounting earlier in the year (I was able to pick up 5.0 of my 7.2.2 home theater at great prices). When they came out of the discounts, they seem to have reset their pricing higher on a lot of their speakers. This is an odd situation where I think Massdrop is actually understating MSRP - it's actually $199 on the Klipsch site and through their authorized dealers today.
BTW, kudos to those from the earlier drop mentioning camelcamelcamel - best site to know what kind of deal you're getting.