Hey there !
Firstly: This might be a repost, I haven't found a thread that talks about this, maybe similar, but not exactly, but I try to contribute, so if you find this interesting, reward it, otherwise just ignore it, I think there are too much *repost* comments on these forums.
So, Children's week is coming up in a week, and as always, there are people who will try to complete the achivements, and they just tend to take the easy way, and buy stuff off of the Auction House.
Here's the actual gold making part:
This achivement, Bad Example requires you to eat certain sweets in front of your orphan.
One of them is Delicious Chocolate Cake , which amongst other materials, is made of Small Eggs, which is very easily obtained by killing Feral Dragonhawks in Eversong Woods, they drop Small Eggs with a 100% chance, even two at the same time.
If you have cooking, and were so lucky that you've got the recepie for it, I advise you to cook the cake actually, just like I said people will take the easy way, they will not purchase all the materials, find a capable chef, and so on, they will just search for the made cake on AH, and buy it, and so you can profit.
An other one is Tasty Cupcake , which are made of Simple Flour (vendor stuff) and Northern Eggs. These babies are dropped by Imperial Eagles , they are fairly easy to kill at level 80.
Also, if you find either of these eggs on the AH for cheap, buy them, their price will most certainly increase.
Take another look at the Bad Example achivement, some components are sold by vendors simply. There are certain, really dumb people who buy vendor stuff on AH, maybe because they are busy, or they really are just that stupid.
Anyway, consider buying them, and during the children's week you might be able to resell it on the AH.
If you've read this far, I thank you. I regret it, if this was a repost, I do try to contribute after all, if this post did not help you, you can maybe consider the effort I put into typing this.
Much luck with getting a bunch of gold out of this !