Can someone explain why brewing low level potions at higher levels is so costly rules wise? I get the math part. Potion Brewing cost = 25 x spell level (0-3rd) x level of the caster as stated [here](http://www.d20pfsrd.com/Magic-items/#TOC-Creating-Potions). So at the following levels a Potion of Cure Light Wounds cost: Lv5. 25 x 1 x 5 = 125 Lv10. 25 x 1 x 10 = 250 Lv15. 25 x 1 x 15 = 375 Lv20. 25 x 1 x 20 = 500 It seems that making a profession of brewing potions doesn't seem prosperous.