You've just been unlucky, it happens.
Personal luck doesn't make up for statics much, alone.
If I was to put it based on my luck, I got portals most times in EW and very often 5th floor, while in ShB I rarely gor portals ever, so I could say they buffed them. But like they said it's rng.

As for maps not being worth much, it's because the current drops aren't worth much. The current glam was worthless right away as almost nobody likes it, and that's usually the main money-maker of maps. It will probably get better when they add new items. Also, map prices usually are high the first week or so and they were this time too. They're always pretty cheap when there's nothing new.