Need a logo for a penny auction website!

Hello everyone, We need a new logo for our penny auction website. The name of the site and the details will be disclosed to the winning bidder. The logo should be modern and unique. The designer should be professional and should have good creative skills. The logo should be based on the theme of the site and should be according to its color scheme. It will be used for all sorts of purposes i.e. it will be printed on flyers, t-shirts, visiting cards, letter heads etc. So it needs to be very good. The designer should be able to provide unlimited revisions. The final version of the logo should be sent to us in the following formats - Vector, PSD, JPG, PNG, GIF, TIFF. Please let us know what idea you have in mind for the logo and how you will be implementing it. Also, send your portfolio along with your bids. PLEASE NOTE THAT BIDS WILL NOT BE CONSIDERED WITHOUT A PORTFOLIO. Thank You!