There are various bottlenecks (harvesting capacity, environmental regulations forbidding harvesting in over half the year, sawmill capacity, transport capacity)

There are various bottlenecks (harvesting capacity, environmental regulations forbidding harvesting in over half the year, sawmill capacity, transport capacity) that make the market very weird: If you have the capacity to harvest, you can get "pluck it yourself"-lumber really really cheap. In regions where sawmills are at capacity, you can get timber very very cheap (currently basically everywhere). But harvesting machine rent and labour as well as sawing are extremely expensive, as are sawed products.