Looks like the Home Shopping Network is selling Garmin's high-end'ish nuvi 750 for $299 today. That's about $100 less than Amazon. The nuvi 750 is a solid GPS and a great buy at $299. Here's the link to HSN's site.

I'm still working on the full 750 review, but in the mean time you check out the nuvi 760 review, which is identical to the 750 but adds bluetooth and traffic data.

*Update: This was a one-day only sale, and is no longer available.