You can spend as much or as little on pulleys as you want. In this case, we just wanted something functional and reliable, and this kit from GMPP fit the bill perfectly. The kit (PN 19155067) included a 150-amp alternator, power steering pump, V7 variable displacement A/C compressor, and all the brackets, tensioners, and belts needed. Since Mary isn't going to run A/C, she was able to use a kit that omits this (PN 19155167). The GMPP kit with A/C runs around $800, and the kit without comes in at a budget-friendly $630.