Looks good, graphically!

Are you focusing on medium to large corporate customers, or on small businesses?

A problem I foresee with larger clients is that changing the website (even to paste in some script) is a Big Deal. They also probably don't care about the pay-as-you go offering. They have money to spend and might prefer to go with predictable costs.

So, why not explicitly market this to small businesses? Pay as you go is nice in that it doesn't require a huge initial commitment, or endless meetings to secure buy-in. I.e. a proactive HR person might be able to use this and look good to their boss. OTOH since changing the website at a larger shop is such a big deal, there's no benefit to them of low barrier to entry.