Just out of curiosity: does anyone know why so many of the sponsors listed on bulma.io are casinos and betting sites?
67 logos on the home page at the time of writing this, that's $6'700/m. While obviously not FAANG salary scale, it isn't to be sneezed at either.
Depending on the backlink and ambitions for the website in question, I personally don't see that as unreasonable.