I'm hoping somebody can help me as I'm completely confused! I travel one way from Waterloo to Putney every morning Monday to Friday at 8.30am (peak I assume.) I use an Oyster card with auto top-up enabled, and check in and out at each end. It seems to me that since I have enabled auto top-up, I am being charged more and the prices aren't consistent. But the oyster online statement is so confusing I can't understand it! Take a look here:
1) Why does the balance for each day appear to go up and then down!?
2) What on earth do the multiple figures for each use in the fares column mean? Why do some have - and some a figure?
3) Why does the price differ every day? You can see £4.30, £4.40, £6.50, it makes no sense at all!
Basically all I want to figure out is how much I am paying for that single, identical journey each day. Then I can decide if it's worth my while, as I currently get the train in the morning and then cycle home.
Any help appreciated!

1) Why does the balance for each day appear to go up and then down!?
2) What on earth do the multiple figures for each use in the fares column mean? Why do some have - and some a figure?
3) Why does the price differ every day? You can see £4.30, £4.40, £6.50, it makes no sense at all!
Basically all I want to figure out is how much I am paying for that single, identical journey each day. Then I can decide if it's worth my while, as I currently get the train in the morning and then cycle home.
Any help appreciated!