RinseWorksAquaus SprayMate & Aquaus 360 Premium Diaper Sprayer for Toilet Bundle

Why has this gone up in price so significantly? Nearly doubled!

Can anyone tell me if they can get away with using a flexible shower head attachment to clean the cloth diapers over the toilet attachment?

Does this package included with five inch extension for the Aquaus 360 sprayer?

I bought this set and want another sprayer. Is this the copper, abs, or polymer one?