As far as I know you can still purchase items from a legacy shop - the stores just can't be stocked further.

- can you confirm? Not sure if you know off the top of your head. :P

Yup! If the item is priced, then it can still sell in a legacy shop. This is not a bug.

I am thinking it was probably to keep items needed for questing available while the shops were being transitioned over. You can't access the shops outside of the item shop search page since they are being phased out.

Since this is not a bug I'm going to go ahead and lock it up. :)