Finding enough clients to buy your gold on regular basis is hard right now, and it takes time to build up a good private clients base.
You would need to spam about it in-game, accounts/currency trading forums, guilds forums and offer promotions to clients who help you expand your clients base by bringing their friends.
It's not a good idea to do it if you're doing it that small, wait till you get bigger (have around 10 bots or so running) and able to supply at least 30-40k per realm a week.
You can still try to get some clients with your current state, but don't get too many clients or you will lose them PRETTY fast.
The main reason people would rather buying from you is the delivery time and over time... trust.
If you can't provide fast gold deliveries, it will take a lot of time to gain the clients' trust, and you would have to sacrifice price.
If you are going to turn it into a "business", than that's the way to do it.
If you just want some quick and easy money while you still have your own job, stick to resellers.
It's a time consuming process in order to be successful in the gold selling business, many farmers are willing to offer YOUR clients better price/service than yours.
Take gameusd for example; they offer cheap gold, with a reasonable delivery time, they are one of the main reasons they market is fucked up at the moment.
Add to that the increased numbers of bots and all the players who are thinking the same way you are.
It's not that easy to make money from selling gold anymore
Good luck none the less, hope i helped ya somehow
