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Sigh...
According to Tektek, my current avatar is worth 733,061 gold. That sounded like a decent achievement to me, considering I have 11 items on and only need 4 more.
But then it says that my dream avi is a whopping 4,393,061 gold...that makes my current achievement look like nothing...ugh...playing Booty Grab is a long, long road that goes so slowly. It's how I've made the majority of my money, but I still need so much more...and this is AFTER I slimmed down my dream avi to make it a more realistic goal.
But, I mean, why should it take 3,660,000 more gold just to make
turn into ?
Ugh...Gaia can be such a pain sometimes...curse you Tink's Jealousy, Zodiacal, FMAB Winry Rockbell, and SDPLUS #303 O. Renji...

You make a decent amount of money doing that? When I put things high, nobody ever bought them.

The trick is you set a higher price, but never much higher than the lowest listing, or it will take forever to sell. It takes time, patience and alot of browsing in the marketplace. try to find items that will give you a reasonable margin of profit, and don't forget the 2% tax. For me it's easier to keep an excel file where I do all the calculations, so I don't loose money. Before I buy something, I always check if i'm going to get a decent profit. I never do less than 1k profit for a 15-20k item. Since you have ten slots on your store, you can sell 10 items, and so on, and the gold slowly multiplies.
If you really wanna get serious, I recomend you read the following guide:
http://www.gaiaonline.com/forum/gaia-guides-and-resources/500g-48-days-1-million-gold-guide/t.47261753/
I't lenghty, but worth the time. I'm not following every step, but there's good hints in there.