I will advertise your product on my website (PreviewSpace . tk) for 3 days and you can treat it as your own for that period of time and you can forward the link to the page for others to see
If you want your advertisement to stay longer than 3 days just buy more gigs! Its as simple as that
All I need from you is an image (no bigger than 500 pixels wide) and a small paragraph with a description of your product in a word document
You may include your email address and phone number if you want that to be advertised on the page as a way to contact you.