Android dabbler/developer here.

I like how google is empowering their developers with different pricing strategies. Before it was plain vanilla, either you pay, or its free. Yes you can pay for an app and within 15 minutes ask for a refund, but I have trouble sending in a rebate, I know i'll forgot within those 15 minutes.

With these extra payment options, and from what I understand, easy charging system, having someone drop a dollar on content with few clicks or even being able to implement coupons for your content/application will be greatly appreciated. =)