Black sesame seeds are a bit more expensive than white sesame seeds, usually retailing for $18 or more, and can't be too cheap unless dyed or aged. Now we can't find undyed black sesame seeds at all on the market here, luckily I was lucky enough to find a souvenir store that only sells seasonal black sesame seeds, where they have a natural fresh aroma and are very effective to eat, and they cost about $18 from her, which is hard to cheapen.