July 15, 2026 · 7 min read · RelayLink Engineering
"What will this cost?" is the hardest question in blockchain development — not because the rates are secret, but because the scope is usually undefined. Here are the real cost drivers and the order in which they appear.
The cheapest phase and the one that prevents the most expensive mistakes. A fixed-price audit establishes the architecture, the network choice, the integration surface and a milestone plan. Without it, every later estimate is a guess.
Cost scales with logic complexity, not with the number of contracts. A straightforward registry is days of work; a settlement system with access control, upgrade paths and economic rules is weeks. Test coverage and documentation are part of the deliverable, not extras.
In most enterprise projects this is the largest line item. Connecting blockchain networks to existing ERP, CRM, identity or payment systems — with proper error handling, retries and audit trails — is real engineering. Budget for it honestly.
Static analysis, adversarial testing and an independent audit are a fixed percentage of the contract work — and a fraction of the cost of an on-chain incident. For high-value deployments, treat the audit as mandatory.
Nodes, RPC providers, indexing and monitoring carry ongoing monthly costs. A managed operations retainer is usually cheaper than building an SRE function for a single blockchain system.
| Engagement | Typical range | Timeline |
|---|---|---|
| Blockchain audit | $499 fixed | 1 week |
| Focused build | $1,499 fixed | 2–3 weeks |
| Complete project | $2,499 fixed | 4–6 weeks |
| Care plan | $199 / month | Ongoing |
Start with the audit. It is a small, fixed commitment that either confirms the business case or saves you from an expensive build you did not need. Every estimate after that is grounded in a defined scope.
Want a real number? Send us the requirement and we will respond with scope, timeline and price. Request a quote.