Got some codes from them in my last order. Although primarily a BMX shop, they are the go-to place for quality, inexpensive spokes that don't require buying boxes of 50 at a time. They'll generally cut/thread spokes to any length below 300mm with no minimum units.

Code:
44R1 - free ground shipping on orders over $30
44R2 - $10 discount on orders over $60
44R3 - $20 discount on orders over $125
44H1 - 10% off orders < $100 _or_ 15% off orders > $100

Maybe this will help some folks get free shipping on spoke orders.