That's a good price if it includes all the hardware. According to the guys at OK4WD.com the rack alone retails for $580. I hunted high and low for a "3/4 length" rack and finally found a $460 "deal" on the same rack. I found out a week or so later that it did not include the mounting hardware as the salesman had previously told me.
FWIW, ARB doesn't really make a "3/4 rack." The midsize rack (which people dub the 3/4 length) is 73" x 49" and it will hang over the sunroof several inches. The small rack is 43" long and the large rack is 87". Hope that helps. I pick mine up tomorrow.