In general, the minimum cost to construct an ICO website would range between $10,000 and $20,000. However, the cost to launch an ICO depends on the features, functionality, complexity etc. It is advised to seek help from a trustworthy company if you intend to create an ICO-based business website. These are the some  major factors associated with the cost to launch an ICO Such as,

1) Required features of desired ICO platform

2) Smart contract development and auditing

3) White papers creation

4) Security Audits

5) ICO Token Marketing

6) Tech stack utilized

The characteristics listed above assist in launching an ICO, if you want to do it yourself, contact a top-tier ICO development company like Developcoins.