burnchart.io

Concept

GitHub Burndown Chart as a service. Public repos are free, for private access auth via GitHub and pay.

payment gateways in Canada: Shopify, Chargify list; I get free processing on first $1000 with Stripe
start people on a Community plan showing them a comparison table to upgrade to a better offering
community (open source, local storage), business (private repos, firebase)
keep discussion going via gitter or have people comment from the app via helpful
credit card form ux from Designmodo
workers: using a free instance of IronWorker and assuming 5s runtime each time gives us a poll every 6 minutes. Zapier would poll every 15 minutes but already integrates Stripe and FB.
worst case scenario I provide even Small Business plan for free and provide a better experience
$2.5 Node.js PaaS via Gandi with promo code PAASLAUNCH-C50E-B077-A317.
let people vote on features they want to see fast: tally.tl.
use readme.io for documentation