Mithril Dragon said:I meant that it seems that there are a lot of publishers offering d20 supplements which would indicate that there are people out there interested in such things.
If you're serious about getting into publishing, you're really going to need much more solid market research than that....you're still drawing conclusions with no supporting data.
The presence of "a lot of publishers offering d20 supplements" does not mean that there is a market for a product specifically like the one you're planning.
I would recommend, if you're just wanting to see your stuff in print, that you look for an existing publisher who is taking submissions, rather than trying to enter publishing yourself.
Sorry to be a wet blanket, but, as it says in the RPGNow vendor info: Potential publishers need to examine their goals. Do they want to be published, or publishers? Being a publisher means running a business. It means creating a website, coordinating art, editing, and layout, marketing the product, keeping finances in order, and so on.
If you're not thinking of those things, you're better off submitting your work to an existing publisher.