Depends on your product and purpose.
Freeze dryers are no longer prohibitively expensive but are still not cheap due to the cost of machine and running cost.
- Freeze dryers may be worth the prices for those who want lightweight, long-term product storage with minimal degradation in nutrition and taste via the lyophilization process.
- For some product like vaccines, medicines or heat sensitive ingredients, freeze drying is the best way to turn them to stable powder form, without reduce bioactivity or effects.
Freeze drying business are profitable!