I think furniture can be a bit of a tricky one, because there are not such specific recognised brands as, for example, clothing, prams, electronics, etc. So there can be hundreds of listings for similar items, but it's not always easy for the buyer to judge quality and value, especially if they're not familiar with the brand.
Where you live can also play a part, because furniture will usually be local pick-up only so you'll only get people bidding who live close enough to collect. If you live in a city, great, otherwise you may not get enough people bidding against each other to boost the price.
In other words, you're probably not doing much wrong, so I agree with the advice to research completed listings for an idea of what similar items have gone for, then set a reasonable reserve (ie not unrealistically high, but one you'd be happy to accept) with a low starting price.
I've also had some luck recently by listing an item with a high-ish Buy It Now price, with the 'or Best Offer' option, which allows bidder to make you an offer below the Buy It Now if they feel it's too much. It's then up to you whether you want to accept that offer or not.