I just registered on PresupuestoWP website few hours ago and I just got 2 new clients!
At first I though that since publishing a new project it's free it would be a waste of time because it will be full of spam, but to my surprise my just invoiced fully new website and a monthly maintenance plan was accepted and paid.
Really recommended if you are a WordPress professional.
That's said, consider the site it's on spanish so it would be better if you're fluent in that language.