Does InApp billing (V2 or V3) works for a user who uses several accounts and makes the purchase with an account that isn't the primary one?
PD: Some explanation required, no simple Yes/No
In App Billing support multiple accounts reported as a bug in code.google, have a look at it
According to Mr.Sergej (posted in G+ android dev community) in-app products purchased with the first account won't be active anymore while using multiple user accounts!.