The mycelium I purchased seems to be available again, and they list some properties on the website. It is possible that the store shutting down had to do with COVID-19, but it is also possible that they just got it running again after transferring the main operation to a different company.

• Density: 7.6 lbs/ft³
• Compressive Stress/Strength at 15% compression: 18 psi
• Flexure Strength: 34 psi