I like the offer feature. But you have to understand you're taking a risk if you make an offer or a counter-offer.
If an item is for sale and there's a price listed and you're willing to pay it, you don't risk the sale getting away from you. If someone makes an offer, you know you've got a buyer. Take the offer, or hope someone buys it at the listed price. That's the risk.
It can work either way. I wanted to get a particular headphone amp and saw one listed here for about 60% off MSRP. I made an offer for a little less than the asking price and the seller got back to me yesterday just before my offer was set to expire and said he'd had second thoughts and decided to keep the item and cancelled the listing. Had I just paid the asking price, he probably would have sold it to me.
That left me kind of bummed out, since I couldn't find any other second hand pieces at any price. I was kicking myself for not buying it, and my favorite audio retailer (Echo Audio) posted one for just a little more than the other person's asking price and I snapped it up.
Long story short, I could have saved money by just paying the asking price and not making an offer. I might still be looking for one if I hadn't gotten lucky and had one pop up right after that one got away.
