What budget I’ll need to spend to build an online store from the scratch and then maintain it?
The only answer for this question is that it all depends, because there’s no exact sum of money suitable for all cases. First you have to decide the answer to a bunch of other questions. What platform or CMS to choose? Is it open source or enterprise? Are the updates available for free? Are you going to use solely ready-made solutions and customise them, or do you need to develop some custom functionality and design? What web hosting provider to select? What about content? Importing customer data? Integrating with third party systems?
Read more detailed information about the influencing factors in the article “How much does the e-commerce website development cost?” or contact us to discuss your particular case and get more precise answer.