The special one for 1A-1B is $59.25, and the special one for 53 is $56.75 (buying new). Total is $116.00. Seems that the normal version of this book cost more than that to buy new, though rental may be considerably less. Be aware that there are lots of different versions of this book (early transcendentals versus not, "AP edition", "California edition", Purdue custom version, all of the editions before the 7th, etc.) plus various accessory books that show up on Amazon and other places.