Thx all:)...few answers
Each depth enchancer add 38.8 depth...each range one add 0.5 range..so max depth its 910.4 max range its 60.
I did lost counting the entire cost on the tiers..since took me a while to do it,from 9.1 to 9.9 took me more then a month,my fault too...wasnt so smart when i did...