The total of your personal purchases and your retail sales count as your Personal Sales Volume (PSV). Personal Sales Volume is used to determine if your account is Active or Inactive.
So, 4 retail orders at 25 points each would give you 100 points of Personal Sales Volume (PSV). This would qualify you to earn Retail Sales Bonus, Fast Start Bonus, Binary Commissions, and Binary Match Commissions.
It would not qualify you for the STAR Bonus and Matrix Bonus as Personal Volume (PV) generated by personal orders are required for those two bonuses.
For the STAR Bonus you must have 100 Personal Volume (PV) from a single purchase to qualify.