The part is available on the Fairphone [https://shop.fairphone.com/onderdelen.html?___store=default&__from_store=default&phone_type=31|Spare parts] page if you are ordering from within the EU. The iFixit [guide|20527|teardown] is thorough enough if you feel comfortable repairing on your own. If you're not comfortable review [https://fairphone.zendesk.com/hc/en-us/articles/202010356-Our-Fairphone-1-repair-price-list-and-FAQ|Our Fairphone 1 repair price list and FAQ].
At the time of this post I did not see the display available in the iFixit EU [https://eustore.ifixit.com/en/Parts/Android-Parts/Fairphone/|parts store], but a page for the device exist.