How to prevent checking out if the price's $0.00.

I forgot to input the price for one of the items, but can still check out with $0.00.
Is there anyway I can prevent with no price or $0 check out ??

Thanks

What version Zen Cart are you running?

Currently, in v1.3.5 ... if there was an order for $0.00 and shipping was $0.00 and you did not have the Zen Cart Free Charger freecharger installed you would be blocked ...

If you did not have a payment or shipping module that was valid you would also be blocked ...

There is not a way to test for accidental 0.00 products ...

You could check your database table via phpMyAdmin and browse the products table and sort on products_price to see if you missed anything ...

Ajeh:

What version Zen Cart are you running?

Currently, in v1.3.5 ... if there was an order for $0.00 and shipping was $0.00 and you did not have the Zen Cart Free Charger freecharger installed you would be blocked ...

If you did not have a payment or shipping module that was valid you would also be blocked ...

There is not a way to test for accidental 0.00 products ...

You could check your database table via phpMyAdmin and browse the products table and sort on products_price to see if you missed anything ...

It's v1.3.5.
I tried again, the price is $0 but the shipping fee is not $0. I can check out.
And if I select "walk in"(shipping fee $0) I still can check out.
What is freecharger? I don't think I install it.

Thanks
Eric

Have you an URL to this product that we could look at?