After simulating a purchase procedure, I've found that the software will cost you this much:
PCRepairKit package full price 59.95 USD
(Special discount) 29.95 USD
After applying the coupon pop-up, it results that it costs 14.98 USD. You can buy it from the following page: https://store.tweakbit.com/paddle/pc-repair-kit/first?clear
Reminder: Be very careful when you're buying this type of applications. Sometimes they don't actually repair your PC and instead they break things that are still working.