There is a total availibility of 18.4 million Monero in the market, and out of that 16.7 million has already been mined, since the genesis of the cryptocurrency back in 2014.
Now as mentioned before, the limit of mining Monero is 18.4 million, 16.7 million of which has already been mined. It has been noticed that a more finite a resource is, the more valuable it becomes.
Similarly, it can be predicted that the more finite Monero will become as a cryptocurrency, the more likely it is for the prices of Monero to shoot up.
You can find detail info also here:
Monero Price PredictionNow Let me know what you guys think about it? Will Monero Reach $500 in 2019?
Ask yourself if Monero is the only coin out there in existance, does is offer something unique? What people's needs does it satisfy? Answer those questions and you will have your answer. Total supply is irrelevant in most cases. The lack of people is being short-sighted that's why history repeats and maybe that's ways we might see new heights without any reason why.