It depends on market conditions, the goal of the seller (revenue maximisation or profit maximisation), sales expectations and the sales of similar products.








My prediction threads:
Wii U will sell under 40m units (made on 14th September 2012)
PS Vita will sell under 20m units (made on 30th September 2012)
Wii U will sell under 7m in 2013 - I was right







