Where the $45 Actually Goes
The budget breakdown for this stack is straightforward: $20 per month for Cursor Pro and $25 per month for Supabase Pro, totaling $45 per month with $5 of headroom. Every other tool in the stack operates on a free tier or is entirely open-source. This is a deliberate allocation strategy — the two areas where paid tiers deliver the most tangible value for a startup MVP are AI-assisted development speed (Cursor) and database reliability (Supabase). Cursor Pro accelerates your feature velocity with unlimited AI completions and 500 fast premium requests for complex coding tasks. Supabase Pro eliminates the free tier limitations that become painful as soon as you have real users: it provides 8 GB of database storage (versus 500 MB), daily automated backups, 250 GB bandwidth, no project pausing, and email support. For a SaaS MVP expecting to onboard its first paying customers, database reliability is non-negotiable.
Supabase Pro: The Non-Negotiable Upgrade
Supabase Pro at $25/month is the upgrade that transforms this stack from a side project setup to a production-ready platform. The free tier's 500 MB storage limit sounds generous until you realize that a modest SaaS application with user-generated content, activity logs, and relational data can consume 500 MB within weeks of active usage. The free tier also pauses projects after 7 days of inactivity, which is catastrophic for any production application — imagine a customer trying to access your SaaS and finding the database unresponsive. Supabase Pro solves both of these problems and adds daily backups with 7-day point-in-time recovery, which is essential once you are handling customer data. The Pro tier also unlocks higher API request limits, more Edge Function invocations, and priority support. Compared to alternatives like AWS RDS (starting at $15-30/month for a minimal instance with none of the auth, storage, or API layers) or PlanetScale (no free tier, $39/month for Scaler), Supabase Pro at $25/month is exceptional value for what you receive.
Staying Free Where It Counts
Vercel remains on the free Hobby tier in this stack, and for most MVPs, this is the correct decision. The free tier's 100 GB bandwidth, serverless functions, and automatic preview deployments are sufficient for an early-stage SaaS product. The main scenarios where you would need to upgrade to Vercel Pro ($20/month) are: exceeding 100 GB of monthly bandwidth (unlikely for an MVP unless you serve large media files), needing serverless function timeouts beyond 10 seconds (relevant if you have long-running API operations), requiring password-protected preview deployments (useful for client demos), or needing team collaboration features on Vercel. For most MVPs, the free tier handles production traffic comfortably. Keep the Vercel upgrade in your back pocket as a known next step rather than pre-spending on it.
Claude on the free tier serves as your secondary AI brain alongside Cursor. While Cursor handles the in-editor coding workflow, Claude's web interface excels at higher-level tasks: architecture planning, database schema design, writing marketing copy, drafting documentation, analyzing competitor products, and debugging complex system-level issues where you want to paste in logs and error traces for analysis. The free tier gives you access to Claude 3.5 Sonnet with usage limits that are sufficient for periodic deep-dive conversations. The strategic insight here is that Cursor and Claude serve different purposes — Cursor for hands-on-keyboard coding and Claude for thinking, planning, and problem-solving. If you find the Claude free tier too restrictive for your usage patterns, the first upgrade to consider is Claude Pro at $20/month, which would push this stack to $65/month but give you substantially more AI reasoning capacity for architecture and planning work.