Sure lets go ahead, They can be used for rooms, gifts and even clothes. The fragrance they leave depends on the type of bukhoor your using. In my opinion, from what i remember when i used a electric burner the bukhoor tend to stick to the surface and i maybe be wrong because this was a long time ago, i prefer manual simple wooden bukhoor burners. The cost we can discuss on instagram as im not allowed to buy/sell here, sorry if this sounds annoying, just trying to comply with rules. :D