Price changes? – SHOP/Who What Wear Review

I tried to purchase a few things from this app and my cart said everything was $22+ before shipping/taxes then when I went to the next page to add my payment info & address the price of the items went to $66+?? & that was just for the same items that all added up to $22. Not sure what's going on here but I do like the app just wish that the pricing was accurate? Might not be ordering.
Review by Jhudo on SHOP/Who What Wear.