Final answer:
The provided information does not include the cost of Netflix On Us Basic for Magenta plans with 2+ lines. It is recommended to visit the Netflix website or contact customer support for accurate information.
Step-by-step explanation:
The basic Netflix plan for Magenta plans with 2+ lines is not mentioned in the provided information. The information provided only discusses the price hikes that took place in 2011 and 2014. It does not specify the cost of the Netflix On Us Basic plan for Magenta plans for 2+ lines.
However, you can visit the Netflix website or contact their customer support to get specific information about their plans and pricing.
It is important to remember that pricing and plans may vary depending on location and other factors, so it is best to directly consult the official Netflix sources for accurate and up-to-date information.