In 2005, LEGO released 4 Bionicle Playsets sets, all of these sets have been retired. For that year, the total price of all retail sets cost $200, today those sets are valued around $576, a growth of 188%.
Most valuable 2005 LEGO Bionicle Playsets set
8759 Battle of Metru Nui $207.87
Highest growth 2005 Bionicle Playsets set
8757 Visorak Battle Ram +230.71%
4 sets

8757 Visorak Battle Ram

Theme / Subtheme Bionicle / Playsets
Year 2005
Pieces / Minifigs 176 / 14
Availability Retired
8757 LEGO Bionicle Visorak Battle Ram
Retail $29.99
Value $99.18
Growth  +230.7%
Annual growth 4.7%

8758 Tower of Toa

Theme / Subtheme Bionicle / Playsets
Year 2005
Pieces / Minifigs 401 / 14
Availability Retired
8758 LEGO Bionicle Tower of Toa
Retail $49.99
Value $160.55
Growth  +221.2%
Annual growth 7.0%

8759 Battle of Metru Nui

Theme / Subtheme Bionicle / Playsets
Year 2005
Pieces / Minifigs 858 / 14
Availability Retired
8759 LEGO Bionicle Battle of Metru Nui
Retail $79.99
Value $207.87
Growth  +159.9%
Annual growth 3.3%

8769 Visorak's Gate

Theme / Subtheme Bionicle / Playsets
Year 2005
Pieces / Minifigs 318 / 14
Availability Retired
8769 LEGO Bionicle Visorak's Gate
Retail $39.99
Value $108.59
Growth  +171.5%
Annual growth 4.8%