If you can get a registry cleaner for good prices, that’s good. If you can get a registry cleaner for multiple devices for the same price, that’s even better. But if you can get multiple software for the price of one or for reduced prices, that’s the best offer you can get. And CCleaner’s offer is definitely the latter.
Why choose the “regular” CCleaner Professional when you can get Professional Plus, which is the same software but with three additional programs as nice add-ons. Add an extra $15 to your annual subscription and you can get the three complementary software for just $5 per program instead of $24.95 per software.