Bid Price
 

How can i change the price for a bid?
Now when user set the best price.
The startprice is 0,25.
I want to change this to 1,00

Second question about bidding:

If i user bid 10,00 and the user set the price on the best price,also the bid is start with 0,25 and no 10 euro
How can i changes this setting that the price will be 10,00 and not 0,25?