Tiarasyada aroosyada iyo madaxyada madaxa ayaa had iyo jeer lagama maarmaan u ah arooskaaga iyo xafladda arooska, naga hubi liisaska ugu dambeeyay ee qiimaha leh, waxaan leenahay qaabab badan oo buuxin kara suuqaaga kala duwan ee aad u baahan tahay, laga bilaabo fasalka caadiga ah ilaa darajada sare, laga bilaabo qiimaha jaban ilaa qiimaha sare.