In 2007, LEGO released 2 Promotional LEGO Brand Stores sets, all of these sets have been retired. For that year, the total price of all retail sets cost $2, today those sets are valued around $38, a growth of 1826%.
Most valuable 2007 LEGO Promotional LEGO Brand Stores set
75th Anniversary LEGO Duck on Wheels $32.05
Highest growth 2007 Promotional LEGO Brand Stores set
Penguin +215.08%
2 sets

75th Anniversary LEGO Duck on Wheels

Theme / Subtheme Promotional / LEGO Brand Stores
Year 2007
Pieces 44
Availability Retired
75th Anniversary LEGO Duck on Wheels
promotional
Value $32.05
Annual growth 6.0%

Penguin

Theme / Subtheme Promotional / LEGO Brand Stores
Year 2007
Pieces 9
Availability Retired
Penguin
Retail $1.99
Value $6.27
Growth  +215.1%
Annual growth 6.2%