There is a relatively small group of people interested in buying painted figures to put on the table and play the game right away - others will either prefer unpainted miniatures to paint themselves or cheap painted figures to strip and repaint. The latter will only go for a fraction of the new price, unless they're metals (easier to strip and more sought after in general for being rare in some cases). Finally, yet others will look to purchase painted figures for display, but these would then require top-end paintjobs of course, which these simply aren't.
At a discount webstore, the full Escape from Goblin Town set can be bought for about twice your asking price. For that, people will have the same figures unpainted, plus scenery, a full goblin army and a rulebook. Indeed, most people will already possess the offered figures for that very reason, as it's rather good value, thus further decreasing demand.
Worth noting your listing also mentions they are finecast by the way, while the pictured figures are all plastic rather than resin (increasing value because many dislike finecast and plastic's easier to strip, but decreasing it because plastic is simply worth less).