About Diagon Alley

LEGO 75978 Diagon Alley is part of the LEGO Harry Potter General theme, contains 5,544 pieces, includes 17 minifigures. Its original US MSRP was $449.99. BrickPicker tracks live retailer pricing across Amazon, Walmart, Target and LEGO.com, eBay sold history, BrickLink part-out value, retirement forecasts and an investment score for Diagon Alley.

Answered live from BrickPicker’s market tracking, review analysis and retirement model — these update as the data does.

What is LEGO 75978 Diagon Alley worth today?

BrickPicker currently values a sealed Diagon Alley at $534.59, based on 66 eBay sales over the last 90 days. That is 19% above its original $449.99 US retail price. The full price history is on this page.

How has LEGO 75978 Diagon Alley performed compared with its retail price?

Since retiring, it has appreciated about 19% over its $449.99 retail price, with sealed copies now trading around $534.59. BrickPicker subscribers get the full Max Profit analysis for this set, which weighs eBay sold trends, retirement timing, liquidity and reviewer sentiment into one verdict.

Is LEGO 75978 Diagon Alley retired?

Yes. Diagon Alley retired in September 2025. Once retired, sets are only available on the aftermarket, which BrickPicker tracks through eBay sold prices and BrickLink listings.

How good is LEGO 75978 Diagon Alley according to reviews?

Diagon Alley holds a BrickScore of 85 (Highly Recommended), the consensus of 3 expert reviews from 3 sources. Owners rate it 4.5/5 across 368 buyer ratings. Read the full review analysis →