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Lowest price I've found for this game (especially in physical cartridge form) so far. Next lowest is $29.99 in Nintendo 3DS eShop.
Personally I prefer physical cartridges, and at $5 less than digital form, that just makes this a sweet deal!
Dance Dance Revolution (DDR) Hottest Party 3 Bundle (Wii) = $49.99 FSSS @ Amazon.com
http://www.amazon.com/Dance-Revolution-Hottest-Bundle-Nintendo-Wii/dp/B002DC8GIG/
This bundle includes 1 Dance Pad Controller + 1 DDR:HP3 (Wii) Game. It has been consistantly priced at ~$69.99 (or $62.99...