just because there is no buyer yet doesn't necessarily mean there is anything wrong with the item, the price, or the listing. i can see you have a number of watchers - one of these watchers may one day just decide to purchase the item. i wouldn't stress about it - sometimes it just takes time. 

i've had items with a stack of watchers and hundreds of views that have never sold - and then i have had items which have had less than ten views and no watchers and someone just comes along and buys it. there's not necessarily always an art to it - sometimes it's just a case of people not buying because the time isn't right for them.