Lowest price I've seen including the 50 blades and 3 knives.
Lowes has the Task Force 3-Piece Utility Knives with 50 Blades for $6.98 +
ship or free in-store pickup.
Link: http://www.lowes.com/pd_60705-16878-54370_0__?productId=3277225&Ntt=utility knife&Ns=p_product_price|0&pl=1¤tURL=/pl__0__s?Ns=p_product_price|0&Ntt=utility+knife&page=2
!