How Much Does Plan B Medicare Cost? 
The cost of plan B will vary depending on your age , gender , zip code , tobacco use , height and weight -LRB- some carriers use this -RRB- and the carrier you pick . Medicare Part B -LRB- if this is your question -RRB- is $ 105 per month for 2013 . Only a few carriers offer Medicare supplement plan B . It is not very popular . 