Merchant + Guide + Nurse in Forest together would not be enough for a Pylon.
Merchant likes Forest, so that gives a bonus, and Merchant likes Nurse, but he does not "love" either. He is neutral on the Guide, and he gains no space bonus with 3 NPCs.
So 2x Likes and no space bonus is not enough to get a Pylon.
The rounding issue (that I mentioned before) is what's making it a 90% discount, as 2x likes SHOULD be more than 90%, but it wouldn't be the required 85% for him to be selling a Pylon anyway.
Showing off with your builds huh?I had the same problem, I tried everything and nothing worked. I was able to achieve the Desert Pylon, but for some reason the Jungle one and Forest were impossible.
I tried every combination I could find on the internet, but then I realised the problem was the housing.
Here is the house for Golfer + Zoologist + Kitty. In the beggining, there were just Golfer and Zoologist and 2 rooms, the one on the left (the lower one with loom) and the one on the right (WITHOUT THE DOOR CIRCLED RED) and couldn't get the pylon. The problem was that the rooms were too big or the NPC's stayed too far apart. After I realised this, I put the red circled door and everything was ok. (in the lower room is kitty, in the middle room with bathtub is Golfer and in the right room is the Zoologist)
View attachment 309622
Then I tped in the Jungle to check on Witch Doc + Dryad house.
This is the BEFORE, NO PYLON, rooms right next to eachoter, they interact with one another etc.
View attachment 309620
This is the AFTER and this worked, I have the pylon and everything.
View attachment 309621
So before doing any combinations, check the spacing, check the house. I know this won't resolve the problem for many, but this worked for me.