[Long Story]

How can I go about getting an auto-buy feature for my website? How much do they cost if they do, and what is the possibility of someone finding a leak in it and releasing my private guides?

[Exemplification]

Visit the marketplace "Service Requests" section. Can probably find someone here to do it for like $50-$100.

Security depends on who you get to implement the function and whether they know what they are doing.