Add an option to upgrade premium tabs to quad tabs

Been playing poe for quite a while and still dont understand why theres an option to upgrade basic stash tab to premium and not premium to quad stash tab please make this possible

supporters would ask for a conversion of 4 premium tabs to one quad, which is pretty legit and requested pretty often so far.

and ggg wouldn't do it cause players will buy quads despite having hundreds of premium tabs already (like me).

their strategy works.

Ive been asking for this for close to 6 years

it wont ever happen

Adding cheaper normal quad tabs would be good as well.