For sale here is dried Ganoderma tsugae foraged in Oregon in Fall 2024. The hemlock reishi mushroom is widely regarded to have medicinal benefits.
All of the mushrooms I forage (or grow) are free from rot, bugs or decay. I assume I will be eating them myself so I keep very high standards. I use trimmings and unacceptable fruits to spawn these mushrooms to other locations, so I have no real need to keep anything below restaurant quality standards.
Mushrooms come with a desiccant packet to help keep them dry and shelf stable. They can stay inert and unchanged for years but I recommend using them as soon as possible.