I'm impatient to see what would the numbers be in a week, month, and three months. This story seems to be one of the fewer examples of good developers joining ThemeForest and not wanting to build 100-in-1 themes, but having 7 sales in 2 days may be the indicator of what customers actually want.

It's great that Envato's reviewers cover security issues and other compliant problems, but with a monstrous theme with 5 sliders, 3 galleries, WooCommerce support and 150 theme options it's not possible to catch most of the potential gotchas. And that's what most people sell since customers are looking for that.

Also, let's not forget that 7 sales for $43/each is $301, and Envato charges 50% for new authors, so it's $150 worth of sales in the first two days. For a theme being developed for 6 months by two people as Jeff said, if sales don't multiply by at least 100 (which won't happen for sure), I don't see it as the best investment myself.