Pricing for the development of a chatbot is similar to the pricing for site development. If you need a simple, do-it-yourself website, you can use the free CMS and create it for free. But if you need a complex e-commerce platform, multilingual, integrated with CRM and accounting systems, you will need something made to order by experts with a proven track record.

To create a chatbot taking a similar approach, there are visual dialog editors, both free and costing up to fifty dollars. But they only allow to build textual dialogues and load simple, non-dynamic multimedia content. For a worthwhile product, chatbot cost is much more, because you need the work of a team of experts.