Walmart offers OnGuard Double Team Bike U-Lock and Cable Combo Pack for $12.97 (orig. $34.96) +$5.99 shipping or free ship to store.  Shipping is free on orders over $35.

Product Description:

OnGuards 4616 standard sized U-lock (4.17 x 7.87 inch opening), which easily allows you to secure your bicycle to a large variety of solid stationary objects. Included is a bonus 4 ft. long x 10mm double loop end cable, utilizing a strong braided steel cable, that allows you to quickly secure your front wheel without needing to remove it. The lock features OnGuards rotating locking sleeve mechanism locks the U shackle on both sides, providing a solid locking interface between the U-shackle and the locking cross bar. OnGuards patent pending Z-cylinder lock mechanism is pick, pull and Drill resistance and features an automatic dust and debris cover to help ensure the longevity of the lock. Included are 2 keys and a quick release all tube mounting bracket allows for convenient storage and transportation of the lock.