We support tiered baskets. It is done a little different than what you describe in that all tickets are the same. When you add your prize basket you can set the “number of tickets required”. So you can have normal baskets that take 1 ticket to enter, and higher value baskets can be set to require a certain number of tickets – such as 3 tickets. The website will display the number of tickets required, and when your customer goes to place a ticket in the basket, the website will automatically place that number of tickets in the prize basket.