We're actually big fans of the MailChimp pricing model (both pay-as-you go and monthly options), so it's a possibility.
About Bootstrap, the current demo already uses it for the non-visual elements (grid, etc), but we're still not sure about a whole-scale import yet. There are a lot of changes afoot with Bootstrap and Foundation (mobile-first being a big trend), so we're noodling on a ton of options.
We're actually big fans of the MailChimp pricing model (both pay-as-you go and monthly options), so it's a possibility.
About Bootstrap, the current demo already uses it for the non-visual elements (grid, etc), but we're still not sure about a whole-scale import yet. There are a lot of changes afoot with Bootstrap and Foundation (mobile-first being a big trend), so we're noodling on a ton of options.