This purely depends on scope of work. Developing a website from using a standard predefined template would be easier compared to building something that totally resonates your brand identity and customer experience needs you wish to offer. 
  
 After which to maintain the website a month retainer can be opted.

I am looking to hire an experienced and self-sufficient shopify developer to build a shopify website from scratch and maintain it going forward. 

How much

I am looking to hire an experienced and self-sufficient shopify developer to build a shopify website from scratch and maintain it going forward. 

How much should I budget for an experienced hire?

How much should I pay a Shopify Developer