I did the Shinwa Quest some minutes ago, it went Cynthia - Nori - Maleria - Carl - Library. After doing all the quests, I had the Shinwa item in my inventory (the Little Helper) and only 2 other common items when there should be at least 5?

It's intentional. Questers not giving out prizes / low prizes?

Oh, thank you for letting me know! Staff should really make a news post about this to prevent double postings. I don´t like it nevertheless, LOL. My shop makes not much profit these days.