Z'ar will hold the brew up to the light and scratch his chin. The goblin's explanation had been... Informative, but he still felt puzzled at the object. If the shopkeep was all natural then how did she know the effects of the tincture? Did she make it herself? If she was speaking the truth it meant she must've tested it and measured if she could give such a quantitative example. Did she herself purchase it from somewhere? His spiral of thoughts end however at the sound of Odrosa's transaction. Looking up and seeing even Sir Alec with a content expression he gathers that the knight had found something worthwhile. With a shrug Z'ar will dig out the coins and squat to pass them to the goblin, pocketing the tincture. If nothing else the item seemed humourous. Besides, it would be rude to not purchase anything after taking the lady's time.