Ok I discovered something weird and maybe you nice folks here can help. Amazon has two listings with different ASINs. One is a single disc and other other is two discs.

The first one here is not in stock by Amazon (2 CD), but the second seems to be (1 CD):

https://www.amazon.com/Still-Life-Opeth/dp/B0013N4AT0/

https://www.amazon.com/Still-Life-Opeth/dp/B074HG44VK/

What's up with this?