advice on migrating to another platform

I have a shop on a bespoke platform but i want to be able to do more with it and i cant . When i asked for it i asked for open cart but they did it on the own platform . Does anyone know how easy it will be to migrate to another platform like open cart . And the cost .
I want to be able to offer credit card processing and i can only do paypal .

i want more delivery options and other stuff .

open cart offers this . My platform doesnt .

Please reply if your heavily experienced in this . PM me for my sites please .
Im looking really for advice and quotes i have 2 shops . I want the design staying the same just the shopping cart changed .
I will not choose anyone with NO feedback or Neg Feedback .
If per chance you can do these changes without me changing the cart i will be interested in that

 

You probably have a database of products you want to transfer.

A freelancer can create a script to import these products into a new system (opencart/magento). Custom code is required for such import and experience with target framework. You can post a project on a freelance site.

 

Hi, Try with the advanced open source shopping cart software Zeuscart.

 

Please use Magento platform to create ecommerce website. There are lot of features which help your ecommerce store more user inviting look and feel.

 

If you want more stuffs then you can go ahead with Magento Migration.

 

Most "big" carts now have migrations tools to import all of your content and products from almost any other source. I personally recommend Shopify but if you want opensource then I would say go with Magento.