I think having hit 500k now may be a good time for a break from serious attempts at making gold. I certainly don't intend to cease all gold-making projects, but basically it's come to my attention I may enjoy my playtime a bit more if I don't focus so much on gold-making.
I once bowed out of the glyph market because it was taking more time than I felt it was worth. Well, I'm sort of feeling that way again, but for gold making as a whole. I love being able to log into 10-20k in my mailbox each morning, but I tend to lose sight of the fact that that's usually because rather than play my toons and enjoy the game I was sitting in SW babysitting my auctions for most of the evening before.
My surge in gold-making with a lack of effort required is now explained. My main competition in both of my main markets whispered me today explaining they'd had their internet knocked out for a week by a storm. (They attend a raid I run, thus the whisper. I doubt it's common for most people's competition to whisper them with updates. :P) I've decided this is a good time to take a step back and decide just how much of my playtime I want to invest in making gold.
I'm still going to work to make gold, and I'm still going to blog just as regularly about my ventures, but for a week or two I think I'm going to bite the bullet and log off my AH toon except for posting and cancelling, no more of this AH camping, no more 2 hour prospecting marathons. I will make gold, I know it. It may take longer but, in the end, if I enjoy myself more and get to experience the game the gold's actually for I think I'll still come out the winner.