There seems to be a difference between the available Store Credit of yours with the site currency you had picked previously. Would you like to:
Path Of Exile ITEMS USD $8.06
Path Of Exile ITEMS USD $8
Path Of Exile ITEMS USD $11
Path Of Exile ITEMS USD $6.82
Path Of Exile ITEMS USD $14.02
Path Of Exile ITEMS USD $14.88
Path Of Exile ITEMS USD $31.68
Path Of Exile ITEMS USD $37.92