Xpand Laces currently has NEWSITE30 coupon code that can be used on 4 or more pairs of laces. You can get an 8 pack of white or black laces for $45. Add the coupon code to bring the price down to $31. Shipping is free.
White laces 8-pack [xpandlaces.com]
Black laces 8-pack [xpandlaces.com]
This is the best deal I've been able to find on these laces. If you all can figure out a way to get more than just these colors for the same price, please let me know.