Your Portfolio Value and Cost Basis do not include cards without an Alt Value. Once an Alt Value is assigned then your values will be updated automatically.
You have the option to use the asset price given by Alt Value or manage the valuation yourself. To manage the valuation yourself, select the card whose price you want to change, then click "Edit" next to the Alt Value. You can then input your own estimate of the card value, which may be useful if you disagree with the Alt Value of a card or if the Alt Value is not yet available. Anytime you input a value, we are using this as feedback to improve our valuation model. This change will impact your total Portfolio value, and you will have the option to switch between your inputted value and the Alt Value as you please.