Tycoon Enchanted Ore points

Hello, @silvermistr.

I noticed that in Tycoon its giving 1 tycoon point per Enchanted Ore spend, but when I buy Perfect Enchant Stone and it's not giving the full points. For instance I'm buying 999 Perfect Enchant Stone which is 999x4=3996 Enchanted Ore, but in tycoon it gives around 3k points, not 3996. Can you explain me how it works, please ?

Thank you.