If you are looking to ‘optimize’ both your Mac and the MacClean license price, then choosing the Family license pack is the best option available. This way, the license per Mac will cost you $7.99, a fraction of the $29.99 Personal license price.
But the price gets better if you are willing to add more services. By upgrading your order to include software that will keep your iOS device clean along with helping you to manage everything on those devices and iCloud, you’ll be able to save $50 with the app bundle. That's if you choose the family pack version, though; if you opt for the single license pack you’ll still save $40, which is significant.