To know it just ake the total amount of the money you use on the imbuements and split in the totals hours of it by eg:
You waste 100K (Total) to get Intricate (elemental)
100K/20 Hours = 5K per Hour
You cant ask about a table or estimate because the price of servers are different and can change with the time. Also we dont know if you use or not Gold Tokens or if you get some o f you own creature products.