Just a heads up: you can't earn Bitcoin directly this way. It's true that this can be profitable even with a very modest setup, but a lot of masternode coins are scams. Initial costs are also usually expensive enough that you might as well buy a mining rig setup if it would be profitable for you.
Yes, there are many scam masternode projects, I only gave the op the easiest option because there are several coins that only need a small capital to start masternode than mining with tools or on cloud mining.