Looking at Newegg's prices, if you go with the Maxtor 250 GB External Combo, then it's around $230.
Still at Newegg, if you go with a Maxtor 250 GB internal (8 MB, 7200 RPM), it's around $165.
Add an external enclosure, and you're around $210. Plus, you can get external enclosures of different colours, sizes, etc, etc.
The only thing you won't get is Maxtor's OneTouch software - dunno if that's worth the $20 to you or not.
Or you can ignore me completely as...