Talk:Tech Center/@comment-26178467-20150307110323/@comment-26178467-20150307171501

then the production cost differs for levels .. if i had built a hover tank lvl 1 with 150000 metal and 200000 oil .. then i upgrade the level to 5 .. there will be a profit for me so am i benefited with it ??? there would be a total profit of 15000 for me !! are you sure with what you are telling ?