Eforcity has the 5-Pack Brother LC51 BK / C / M / Y Compatible Deluxe Ink Set for Brother MFC series printers for $15 - $11 off with coupon code EFWS110232 [Exp 11/9] + $4 shipping = $8 shipped. Includes two LC51 Black (137-101) and one each of LC51 C/M/Y (137-102, 137-103, 137-104). [Compare]

4-Pack Brother LC61 BK/C/M/Y Compatible Ink Set = $7 shipped w/ code EFWS110241