Show method pay in price cero (free)

Help me please,
i have a proble with a product.
i have a product with price is 0 (free) for "n" days and after i need charge.

i use a credit cart method payment and no now credit cart form for this product.
is there a way to request credit cart for this product with price 0?

i searched this problem in every internet and this driving me crazy!!
thank you.

If you want to delay the payment, you should still enter the price of the product.
Then, some payment methods allow you to not accept the payment immediately.
For example, with Authorize.net you can do that with a small modification:
www.hikashop.com/forum/4-how-to/4575-aut...n.html?lang=fr#24600