In this area we have a service called Exchange-A-Blade where you initially buy a blade then when it gets dull you trade it in for a sharp blade at a lower cost. I use this this service for general purpose blades. For speciality blades like thin-kerf ripping or melamine blades I purchase outright and have them sharpened.
To clean blades I use Simple Green with a plastic brissled brush, then I rinse in hot water, dry on paper towels, and use a heat gun on low setting to ensure all moistures is evaporated.
I finish up with a tool protective coating.
THE GOOD NEWS: You create your own destiny...THE BAD NEWS: You create your own destiny