Minimum price - an option - the explanation in the Help and here: 

Again and again leads the "minimum price setting to misunderstandings. A statement on this topic, see our help in points "Buy" and "sell". There you will find a detailed explanation of how they can set a reserve price, when to do it and why you can make the.
However, you can also apply directly to us in such matters, which is by mail, fax or phone, addresses, numbers, etc., see the imprint, or contact in the "News" on the homepage.
In addition, the most important thing on this topic, written here together again:

Each seller has set his side the possibility of a minimum sale price for an item. This is important because there are always times articles you like the starting bid attaches small, but they can not pass below a certain price or want to. Especially with new and like new items this is a good setting option. The advantage is in the true sense that not only an immediate purchase price to be used, but the fact that the seller gets the opportunity to bid on this item and still virgin as can offer from 1 €. Is there now not enough bids, or bidders and it will not reach the seller's minimum price by, keep the goods for End to continue ownership of the seller. Both parties (buyer and seller) are informed about it after the expiry of the advertising by email. It is always important to check the emails after an article.
There you will find detailed information about how for example: "On your subsequent auction on Kouro.de was no bid is made or the minimum price was not met." Here's the notification from the seller. A similarly worded e-mail will also get the supposed buyer.
How to tell whether there is a minimum price has been set?
You can identify it, to apply to the item page under the information, a red text telling you that this is a minimum price was set.
is precisely because of the following written: "activated reserve price" - yes or even no (if the minimum price was not activated), some want the right, untehalb the minimum bid. Is the minimum price, however, is switched on, exactly is what is underneath in brackets - "No contract, if not achieved:" If the buyer with its bid the minimum price has surpassed the seller an email gets to the end, which told him that his product was sold and he sat down with the buyer has to call.


At the minimum price itself:
The minimum price, he can not be set. This possibility is the seller of an item left to themselves. If the minimum price set by a seller, so this is only known to the seller. At the time when an auction starts, you set a minimum price is no longer visible. The auction, however, as mentioned above, marked with a note that this is a minimum price was set. The minimum price is up to each prospective bidder as well as any hidden, which is very important and has several reasons. The first reason is that a minimum price, is not being kept secret to share, equal with a buyout price and that is not desired. Is the minimum price the bidder is known, it offers first at all, or it provides the seller an offer without leave from the beginning, an amount in such amount and in this case is nothing more than a buyout. Another reason for the secrecy is to protect the auctions and the attraction of the bid. Is the minimum price is known, each fellow to offer the same or similar article is in a position to gain advantage by undercutting the minimum price and therefore draws alleged buyer on his auctions or items. This undermines the concept of an auction platform and is also unfair to other vendors. The most important reason is that a well-known minimum price the seller in principle, any possibility of taking the maximum bid to get for a product, because no one would pay more than would be set at a minimum price and you're back can segment buyout, because then The seller also set the minimum price the same as an immediate price.