LEGO Diagon Alley (75978) Value
What does the LEGO Diagon Alley (set 75978) actually sell for? Below are real eBay completed-sale medians, split by condition, with the most recent sold listings. That’s up 22% on its $450 retail price.
LEGO 75978 Diagon Alley — what it sells for
⤢ enlarge+22%vs $450 RRP — sealed median $551 (1.2× retail)
Sealed
$551
range $527–$575
You’d net $479 after eBay fees
27 sold
New, factory-sealed (MISB).
Used — complete
$395
range $293–$502
You’d net $344 after eBay fees
10 sold
Opened/built, all pieces.
Incomplete
$390
range $390–$390
You’d net $339 after eBay fees
1 sold (thin)
Missing pieces, box or instructions.
Recent real sold listings
Recent sold listings
| Listing | Condition | Sold | Price |
|---|---|---|---|
| LEGO 75978 Harry Potter Diagon Alley – Complete, Excellent Condition | No Box | Incomplete | 2026-06-05 | $390 |
| 100% Compete LEGO Harry Potter: Diagon Alley (75978) displayed not played | Used — complete | 2026-06-04 | $415 |
| LEGO75978 Harry Potter Diagon Alley Brand New Sealed | Sealed | 2026-06-04 | $530 |
| LEGO Harry Potter Diagon Alley Weasleys' Wizard Wheezes 75978 834 pcs Weasley | Used — complete | 2026-06-03 | $125 |
| LEGO Harry Potter: Diagon Alley (75978) | Sealed | 2026-06-03 | $575 |
| Lego 75978 Harry Potter Diagon Alley Brand NEW Retired NEVER OPENED | Sealed | 2026-06-02 | $607 |
| LEGO Harry Potter Diagon Alley 75978 Complete Set w/Minifigures + Books SOLD OUT | Used — complete | 2026-06-02 | $375 |
| Lego 75978 Harry Potter Diagon Alley Brand NEW Retired NEVER OPENED L1 | Sealed | 2026-06-02 | $499 |
| LEGO Harry Potter: Diagon Alley (75978) New Sealed Retired Set HUGE 5544 pcs | Sealed | 2026-06-01 | $500 |
| LEGO Harry Potter: Diagon Alley (75978) New Sealed Retired Set HUGE 5544 pcs NIB | Sealed | 2026-06-01 | $575 |
How to read these numbers
Each figure above is the median of real eBay completed sales for the Diagon Alley (set 75978) in that condition, including shipping. “Net” subtracts eBay’s ~13% fee — what you’d actually keep as the seller. Notice the spread between conditions: sealed around $551, used — complete around $395, incomplete around $390.
Prices move, so check the recent listings and run a fresh lookup before you buy or sell. For context, see the most valuable sets and other retired sets.
Frequently asked questions
How much is LEGO 75978 worth?
Based on recent eBay sold listings, the Diagon Alley sells for a median of about $551 sealed, less in lower conditions. See the full condition breakdown above.
Are these asking prices or actual sales?
Actual completed (sold) eBay sales — not asking prices. The recent-listings table shows the individual sales behind the medians.
Is the Diagon Alley retired?
Yes — set 75978 is retired, which is typically why used and sealed prices sit above the original RRP.