Updated!
It costs 5 TPE to go up between 70-80. So to clarify from last week, it cost 7 to go from 69 -> 71 because it's 2 TPE to go from 69 -> 70, and 5 from 70 -> 71. For your speed upgrade now, it will cost 5 TPE to move up one. In this case, you would be updating your speed to 72, and I will return the other 3 to your bank.
TPE: 70
Bank: 8
It costs 5 TPE to go up between 70-80. So to clarify from last week, it cost 7 to go from 69 -> 71 because it's 2 TPE to go from 69 -> 70, and 5 from 70 -> 71. For your speed upgrade now, it will cost 5 TPE to move up one. In this case, you would be updating your speed to 72, and I will return the other 3 to your bank.
TPE: 70
Bank: 8