Website review: How much do I need?

The following site reached out to us for feedback.

https://howmuchdoineed.co/

I haven't had time to look at it in detail. Looks nice, easy to navigate, good selection of "calculators" but I cannot attest as to their accuracy. Business model appears to be free with additional paid features if you need them. Typical of many sites and the one I find most effective and least intrustive. Free drives traffic; paid extras keep their lights on and fund further development.

They are asking for feedback, so fackback away!