They've just updated to version 1.1, with a whole lot full of new features. There's a new view that features a cool color-coded price tag (to tell you whether you're winning the auction or not), a countdown timer to show remaining auction time, and a slick little sliding thumbnail view for the auction's images. Plus, there's a whole bunch of other performance improvements.
And the best part is: it's all free. GarageBuy is freeware (and if you like it, check out GarageSale) over on the website.