A scout squad is a minimum of 5 men at 75 pts.
It varies, but we cannot answer this question due to copyrights.
A squad of three (minimum) costs 90p. Each additional (up to a maximum of eight) bike costs 25p.+Weapons
40 points bare
As a normal Space Marine Squad each biker can be customized a bit differently allowing the points to vary, and by copyright laws we are not allowed to tell points values.