Is there a way to buy iPad storage

It is impossible to increase the amount of internal storage in your iPad - as this is fixed during manufacture; what you have is fixed for the life of your device. 

You can, however, subscribe to a higher tier of iCloud storage - but this is not a substitute for internal storage.

About storage on your device and in iCloud – Apple Support

Manage your iCloud storage – Apple Support

If you have insufficient internal storage for your needs, you have two options:

• Manage the storage that you already have:

How to check the storage on your iPhone, iPad and iPod touch – Apple Support

• Replace your iPad with a model with adequate storage for your needs.

Sorry no.

iPads and iPhones internal storage cannot be upgraded.

Regards

Giulio

No.

ALL Apple iOS/iPadOS devices have fixed amounts of flash memory storage that can never be increased/expanded.

Sorry.

Hi!

The iPad storage cannot be expanded. If you want more storage, buy iCloud storage or buy a new iPad with more storage from an Apple Store or an Authorised Apple Reseller.

Best Regards, Nikola