at the moment , no.

by the time you get to the order page , that’s you order (which is stored like that in the db with prices etc).

if you want to change things , you could of course add a link somewhere back to a page with the cart on it, or write some js that , when clicked on an item , removes this from the session and then reloads the page etc etc.

Having said that, I will probably add this sort of thing when i get the chance though (as there are not too many reasons why one should NOT be able to do this really ), but I can’t give you an ETA as to when this will be available I’m afraid

i’ll put it on my list of things to do