Hi.
Pololu recently substantially reduced prices on our stepper motor driver carriers! We have also started to offer them with header pins already soldered on, and you can buy them in bulk, if you don't need individual packaging and same-day shipping, for a discount.
For more details, see the blog post or product category page:
http://www.pololu.com/blog/410/big-price-reductions-and-new-options-for-our-popular-stepper-motor-drivers
http://www.pololu.com/category/120/stepper-motor-drivers
Ryan