>Charge more

Agreed. There is this weird psychological trick where if you charge people more they start to value your service more or at least delude themselves into thinking so exactly because they are spending more money, it's a beautiful thing. If it fails, you can always reduce your price again!

>Never give your service away for free.*

* Except if your business model depends on capturing a large enough audience to feed them ads and generate revenue from that (Facebook, Google, Reddit).