As always, the way searching for video on Amazon works is absolute garbage. There appears to be two listings. I think one listing is a holdover from when they used to sell permanent licenses for copies of the show and Peacekeeper Wars and is basically still there just for people who bought the show back then. Unfortunately, that listing seems to come up first when you search for Farscape.

This is the right listing: https://www.amazon.com/The-Peacekeeper-Wars-Part-1/dp/B07PRM39QW/ref=sr_1_2?keywords=farscape&qid=1553002286&s=instant-video&sr=1-2