It appears this may be due to outdated constants for world size used only on the Market Orders screen? That would explain the problem since all rooms with this are on the flip side of the world from me. 

If I put my room W29N93 into the target room, I get some orders showing me a short range that aren't actually that range.

I had one order show as range 3, but the linear range was 20

I had another order show as range 6, but the linear range was 26

I tried the calc cost function, and it's calculating based on the real ranges for these rooms, so it's just the visual that is broken on the market pages.