and here you have some values:
copper coin = 5 $
silver coin = 20 $
gold coin = 50 $
paper bill = 100 $
money sack = 250 $
treasure chest = 1000 $
silver bar = 2500 $
gold bar = 5000 $
ruby stone = 10000 $
emerald stone = 25000 $
sapphire stone = 45000 $
sorry, but i can't do better :<
medjay- kill your opponents 1st, and than send ~80-90 cit,s into towers and ~60 to crystals, and than again- spam with attack from all buildings at once
 "Tesla Defense"){kind=icon}
 "Noah"){kind=icon}
 "Electric Box 2"){kind=icon}
 "Lock-n-Roll"){kind=icon}
 "Code Breakers"){kind=icon}
 "Match All"){kind=icon}
 "Star Relic"){kind=icon}
 "Brickshooter Egypt"){kind=icon}
 "Smash Diamonds"){kind=icon}
 "Lantern Showdown"){kind=icon}
 "CashMachine"){kind=icon}
 "The Mind Reader Game!"){kind=icon}
 "Blockage"){kind=icon}
 "Futhark - Odin's Quest"){kind=icon}
 "Color Theory"){kind=icon}
 "Civilizations Wars"){kind=icon}
 "Diamond Dust"){kind=icon}
 "Block Striker"){kind=icon}
 "Jewel Lines"){kind=icon}
The last level is really very hard, take a break and come back later again, that helps sometime.