Beware. If you save up your credits and then buy everything at once you are at risk of being caught. now granted that when i mean save up i am talking upwards of 2 mil or so. however i had two friends get their money frozen and items taken away, and their level set back to before they bought their items. My friends both spent about 8 mil. But im just warning you to buy slowly and smart. Hope this helps some

EDIT: dont spend to much in an hour because from what i have heard buying too many items too fast is the only way they can catch you.