See the Sage website for information about Publishing Fees and Open Access:
https://journals.sagepub.com/author-instructions/ALZ#heading-publishing-fees-and-open-access
Publication Fee
When an article is accepted for publication, authors are required to pay €800/US$800 for a Research Report, Review, Hypothesis, Short Communication, Commentary (unsolicited), Editorial (unsolicited), and Ethics Review (unsolicited). Publication fees do not apply to invited (solicited) articles, ethics response, book reviews, and letters to the editor.
Optional open access publishing is available for a fee via the Sage Choice program, and Open Access agreements, where authors can publish open access either discounted or free of charge depending on the agreement with Sage. Find out if your institution is participating by visiting Open Access Agreements at Sage. Open Access agreement eligibility is determined by the corresponding author’s affiliation matching an agreement at acceptance. For more information on Open Access publishing options at Sage please visit Sage Open Access. For information on funding body compliance, and depositing your article in repositories, please visit Sage’s Author Archiving and Re-Use Guidelines and Publishing Policies.
Publication Fee Waivers
A waiver request for the publication fee should be submitted BEFORE the initial submission of a paper. Please send your title, abstract, keyword list and author listing including affiliations (and if available ORCID IDs), to the Editor-in-Chief, George Perry (george.perry@j-alz.com) with a cc to the editorial office (editorial@j-alz.com), along with your motivation for the waiver. Your request will be evaluated. Waivers are available for corresponding authors from low-income countries as identified by the Hinari Project.
There are no waivers given for the open access fee since this is a completely optional fee.