Adverts on this website generally have decent success. You should post them in
this forum. You should be able to post more than one image - at least, other people do, somehow - perhaps you can ask them for advice if it's still not working.
Some generally useful things to tell us:
- Is the set complete (up to maybe a few missing stones)? That is, does it have a full-size 19x19 board, about 180 stones of each colour, and two bowls? Please provide photos of them.
- What's the board made of (if you know)? Does it fold? Is it a table board (thin) or a floor board (thick, probably with legs)?
- Where are you? Where would you ship to, and roughly how much would it cost? (Or, at least, how heavy is the set?)
- How much are you charging? (Roughly.)
You can always ask us for advice, of course - I'm not sure how sound it is for a seller to ask a buyer how much things should cost, but the people around here are a good bunch, and very knowledgeable about things like stone and board quality. Reasonable prices will very hugely depending on the quality of the set. Of course, you can look around in the forum I linked to above to see what previous sellers have sold and for how much.
