Save lots of cash? By buying a drug with DANGEROUS side effects that has no PROVEN results?
Yes, they are currently being INVESTIGATED in clinical trials, but no doctor will recommend taking them unless you are part of a clinical trial and being closely supervised! Also, if you are in a clinical trial the cost of the drugs are covered (in other words they're FREE for the patients), so clearly you're getting something out of this!
Oh, and if you don't already have Covid-19 these will NOT protect you. They are being tested as a treatment - they are NOT vaccines. They are also NOT antivirals against Covid-19. Chloroquine is a medication primarily used to prevent and treat malaria, and colchicine has been used to treat gout. Why would you advocate taking a dangerous drug when it is not needed?
Additionally, no one should take either of these drugs without consulting their pharmacist - both drugs can have potentially serious interactions with other medications (which, if your doctor prescribed it, they would know about and take into account).