Over priced? Maybe, then so are server discs. They are also 10000k with 16megs cache. Though they do have lower data density than the more modern drives. If one fails on me then its not worth the money, but before I bought them I had a series of drive failures that annoyed me no end. I think 5 disks blown in less than 5 years.
I also use a 75 gig one in one of the servers here at work, for ghost images, intranet, wsus and the proxy. Its connected to a 8 year old mobo via a very good quality sata card. This drive is abused to a very high level and is very very quick.
If you are after long term reliability then you could go for Seagate ES drives which are made for server type use and are a lot more reliable. Personally I don't trust Maxtor, we got in a lot of ten computers with Maxtor drives. Within six months eight had failed hard drives.