Depends. If the order is a few thousand dollars, you should have it setup to let them wire you the money or even checks (if the company is in the US).

Normally, for products up to $2K, companies take care of it with credit card. For higher products, you should encourage them to contact you. If you check a few SaaS companies, they have an enterprise plan with no details, encouraging you to contact them directly to find out more.