$49 /mnth at entry level seems a bit steep. Perhaps your CMS is more robust or more user-friendly, but I think you may be pricing yourself out of the market.
Having 5x the customers at $9.95/month is not an advantage
That said, I think our sense is that for startups / newer firms it would be great to come up with some sort of plan that makes this more feasible. We'd love to hear thoughts and we're certainly glad to figure out something that works based on specific needs of people. Email me at ed.hallen@klaviyo.com and glad to chat.
HTH.