What a crazy coincidence, I just factored out my company's payment widget code into a reusable module a few days ago: https://github.com/substack/pricing-widget

What a crazy coincidence, I just factored out my company's payment widget code into a reusable module a few days ago: https://github.com/substack/pricing-widget https://github.com/substack/pricing-widget Basic example: http://substack.net/projects/pricing-widget/basic/ http://substack.net/projects/pricing-widget/basic/ Fancy example: http://substack.net/projects/pricing-widget/browserling/ http://substack.net/projects/pricing-widget/browserling/