Would OpenCart work or would you recommend something better?

Question

Payment systems

Hello, for IM I always use opencart, the client has the following request:
with the possibility of paying through the site,
with registration-personal account
The site will have about 3000 products, so it is necessary to be able to integrate with our system. we are going to install an accounting system, bar coding and so on. PRODUCT
Also filter by price, by subject, etc.
What is better to use (from free)?
PS I'm confused by the integration with the accounting system.

Answer 1

Check out CS-Cart, a powerful platform, easy to integrate new services into. All of the above is there, except for ready-made integration with the accounting system. But this is not in any CMS.