I have six 18" blades w/ 1/2" hole from J-Thomas. Four are BL-748 High lift mulching. Two are TOR-336 regular. My cost was $60.90 + S&H. I am looking for a face-to-face exchange in the Austin TX area. Either for $35, or if you have some 18" blades with a 5/8" hole. These are new, unused. Pics here: http://img.photobucket.com/albums/0803/NGOG_NRYTHRNG/Misc/Blades.jpg Thanks.