Generally speaking, PLA is for sellers with multi-quantity listings of new merchandise. Of course, you are free to experiment with it all you want, but make sure you fully understand it before you do....otherwise, you might be paying a pretty high price to learn though experience what I just told you. I have heard of a few single quantity sellers using it to their benefit, so I suppose it might be worth testing it.
It is Pay Per Click. So, yes, if you use it, and someone clicks , you will pay. No, there is no refund if your clicker buys someone else's item, because Pay Per Click has nothing to do with buying....it is tied to the clicks, not to a purchase.
Unless something has changed (I haven't followed PLA closely, because I don't use it), competitors' listings won't appear on your view item page as a PLA.....PLAs are confined to the search results page. Of course, a competitor using PLS is a different story.
