Looking through the lots on ebay, I found several ads that are sent to you at a small price ....... No one knows what will be sent to you except the seller, you buy a pig in a poke . Have you bought this ? What did you receive ? Are you satisfied with the experience ?
You will be giving your hard-earned money to someone that has the chance to send you anything. Keep in mind, these sellers are out to make money for themselves. The chances that you are going to score, or have a decent deal, is very slim.
If you are looking for something similar to these Ebay listings, check in with local coin shops and see what they can put together for you. That way you can hold them accountable for what they sell you.