In 2015, LEGO released 5 Scooby-Doo sets, all of these sets have been retired. For that year, the total price of all retail sets cost $205, today those sets are valued around $1,335, a growth of 551%.
Most valuable 2015 LEGO Scooby-Doo set
75904 Mystery Mansion $499.99
Highest growth 2015 Scooby-Doo set
75902 The Mystery Machine +845.65%
5 sets

75900 Mummy Museum Mystery

Theme Scooby-Doo
Year 2015
Pieces / Minifigs 110 / 2
Availability Retired
75900 LEGO Scooby-Doo Mummy Museum Mystery
Retail $14.99
Value $99.95
Growth  +566.8%
Annual growth 14.3%

75901 Mystery Plane Adventures

Theme Scooby-Doo
Year 2015
Pieces / Minifigs 128 / 2
Availability Retired
75901 LEGO Scooby-Doo Mystery Plane Adventures
Retail $19.99
Value $137.80
Growth  +589.3%
Annual growth 15.6%

75902 The Mystery Machine

Theme Scooby-Doo
Year 2015
Pieces / Minifigs 301 / 3
Availability Retired
75902 LEGO Scooby-Doo The Mystery Machine
Retail $29.99
Value $283.60
Growth  +845.6%
Annual growth 17.2%

75903 Haunted Lighthouse

Theme Scooby-Doo
Year 2015
Pieces / Minifigs 437 / 4
Availability Retired
75903 LEGO Scooby-Doo Haunted Lighthouse
Retail $49.99
Value $313.52
Growth  +527.2%
Annual growth 16.3%

75904 Mystery Mansion

Theme Scooby-Doo
Year 2015
Pieces / Minifigs 860 / 6
Availability Retired
75904 LEGO Scooby-Doo Mystery Mansion
Retail $89.99
Value $499.99
Growth  +455.6%
Annual growth 16.4%