I’m using a few frameworks from Cocos Helper like Facebook, Google Analytics and Services and few from SDKBOX like Chartboost and AD Colony. Everything works great till the moment I tried to add IAP from SDKBOX. I began to receive an errors for duplicating entry or using the same name for packages (Unique Package Name). I tried to surf through the Internet for looking any solutions, but there is none.

After spending some time and trying different thing I found the solution.
For using CH frameworks like Google Services and Analytics I always add some extra lines into my build.gradle file

    compile 'com.google.android.gms:play-services-plus:8.4.0'
    compile 'com.google.android.gms:play-services-games:8.4.0'

for using Google Services

and 

    compile 'com.google.android.gms:play-services-analytics:8.4.0'

for using Google Analytics

IAP from SDKBOX use their own jar for google and it began to conflict with my dependencies from build.gradle file. Even when I tried to clear my gradle file from play-services I receive an errors for not including Google+ and Google Drive.

After looking through some folders inside my Cocos Project I found one TINY readme file isnide which I read that SDKBOX for Google Services use only lite version of their jar (default settings) and it not include many services like Google Plus, Google Drive etc.

If you want to use them you need to replace this small jar with a bigger one.

After this you need to clear your dependencies from any play-services that are inside, rebuild your projects and relax, because now you can use IAP from SDKBOX and all other Google frameworks from Cocos Helper.

CocosProject\frameworks\cocos2d-x\cocos\platform\android\java\libs\gps\libs – this is the path for JS projects. Inside it you can find readme file, lite version of google-play-services.jar and also full version of google-play-services.jar.full. Just delete small version and erase .full in the end of full jar.

Hope this would help someone :-D