It's clearly not objective, or at least not well explained, MailChip appears to be given a "pricing score" lower than most others that are listed with a higher price.
Good catch, thanks. According to the pricing page, Mailchimp starts out around the same as the others, but as soon as you go over 500 contacts, the price jumps from "Standard" $20/month to "Premium" $350/month. I'll add that as a note to the Drawbacks field.
Thanks for responding. I only gave Mailchimp a brief glance, admittedly they're no longer a favorite for me, and the pricing page was confusing, but I also don't want to spread misinformation. I'll update again.