This is a stumbling point for many as they can't help but remember how much they paid for a particular item and they want to get at least half, if not all their money back, even though the item is used. This is especially common in the clothing categories.
Owners of name brands, such as Banana Republic, J. Crew, and Ralph Lauren, just to name a few, have been stuck on how much these items cost them when brand new, and they expect that they will be able to get at least half what they paid for it simply because its a name brand item. I have learned from experience that this is not the case.
In recent weeks, I sold a Banana Republic Sweater that no longer fit for only $1.99 Plus shipping. While the sweater was still in great wearable condition, it was probably at least 10 years old, but this is a trend that I have seen occur on eBay over the past few years. Most if not all buyers are looking for the best possible deal, especially on name brand items, so if you do not feel comfortable letting your used stuff go for cheap, then you may need to seek out another means to selling your items, like maybe a consignment shop. Just keep in mind that other methods, may take months, possibly years for your item to sell, while eBay is a form of instant money gratification.
If you don't feel comfortable with letting something go for next to nothing, you do have the option to set a reserve. Just keep in mind there is a fee for it, and it tends to scare bidders off as they have no true determination of what your reserve may be. Also keep in mind, you are charged fees based on the starting price you set. This means the higher the price, the higher the fee you must pay at the end of the auction should your item sell.