Build an Online Store

bidding online store each product has a set of time time will countdown to zero product will start at 1.00 last bidder win when product is countdown to zero client will need to buy token in order to bid each bid will extend the time of product by 5s and product price increase of 5cent token cost 50cent winner able to share their experience to SNS client able to use a auto bidder that helps them to bid without login to the sytem example is if product < X value > product auto bid the product. a good content manage system where i can set the product starting price or special perks whereby each bid on that particular product is only increase by 1 cent