I usually spend most of my FP on these to make my NPC level faster but it seems that Aljakeem no longer offers me the option of buying them anymore. Is there a limit to how many of them you can buy in total similar to the "Increase max active time" option which only has 1 upgrade available to buy? I must have bought maybe 10 of the exp scrolls over the past 2-3 weeks, has anyone else noticed this?