More people want it. People want it more. People have less to sell. Or people want money less.

>what can be done about it?

Price fixing. Generally called a "controlled economy". This has been shown to be a massively bad idea.

Support more people making the thing. Subsidies, removing regulation, making it cheaper to make the thing, bring in more workers,

Raise the value of the dollar (and/or don't let inflation happen). That's about as easy as not printing more money. With fractional reserve banking (banks can loan out more money than they have) you also need to raise interest rates.