Please clarify what you are talking about
What is a "Manual hack"
Where is aeria selling such things
And what game is this in reference to?
Any placeholders that allow GMs to manually alter your items for use which gives additional advantage that was not meant to be easily obtained via in game methods. Almost all their games have them. Basically AGE's business model of making it cheaper for those willing to spend to obtain uberness. It is great for those that strive to be the best, but completely reduce the level of gameplay in most of their titles into who can spend the most to redeem the most tiers to send in the most tickets.
GM services or GM hacks. Same thing different phrasing.