Mielech->
Froglok cleric ankhs , soldier belts
Froglok summoner globes , The belts/ankhs being the main problem , the globes do not have as common of a drop or a frequent spawn time , but they are never the less sold.
The temple crests I have not seen a problem with.
sewers ->
Ratmen hoods , I see these being farmed by lvl 30+ all the time , effectively ruining leveling for lowbies in the sewers,
Rat tails and beetle legs = nobody bothers ,
Another faction item from the sewer being the ratmen tails , they dont drop often but Ive seen people buying/selling.
SBAD / PAW->
Warder paws oh lord, Easy exp for almost no challenge , and easy to get.
Badlands->
Lion skins , Tarsus and Lion cub paws , I dont see these for sale or really farmed , infact I find them all the time on vendors, I dont see a problem with these due to the amount of spawns , its not effective to "Farm" without tracking.
And the biggest pain in the arse:
Shrouded Isle:
Wolf/canine fangs : No problem , people dont bother.
RINGS OF HIGH STANDING : FOR sale 24/7 and farmed constantly.
Lurker hearts : Ive seen them for sale but most people fear the basement like the antichrist itself is down there , On this I dont even think the lurker hearts are worth the challenge of getting them , but thats another complaint for another time.
Im trying to think of some other ones but at the moment I am drawing blanks.