[wiradikusuma]

Just my experience with SaaS, usually they start with ridiculously low price to capture the market. After you have established yourself, you can increase your price and grandfather early customers. You can even force your free users to upgrade to a paid plan by stating that ("upgrade now to lock old price! limited time only!").

[pc86]

That's a pretty strained definition of "force" if you're still offering the free tier.