The $100/month Micro-SaaS Stack
$100/month is the sweet spot for micro-SaaS. It's enough to remove all free-tier limitations and add the premium AI tools that dramatically increase your build speed, without being so expensive that you need revenue to justify it. Here's how to spend it.
What You Can Afford
- ✓ ChatGPT Plus or Claude Pro ($20/month) for prompt engineering and code generation
- ✓ Custom domain ($1/month amortized) with professional email forwarding
- ✓ Vercel Pro ($20/month) — unlimited bandwidth, edge functions, analytics
- ✓ Supabase Pro ($25/month) — 8GB database, daily backups, edge functions
- ✓ Resend Pro ($20/month) — 50,000 emails/month with custom domain
- ✓ One premium API (OpenAI/Anthropic) — $14/month of API credits
What You Cannot (Yet)
- ✗ Paid advertising at scale (Google Ads, Meta Ads need $500+/month minimums)
- ✗ Professional design tools beyond Figma free tier
- ✗ Multiple premium AI subscriptions simultaneously
- ✗ Dedicated hosting/VPS (use Vercel serverless instead)
The Complete Stack
Roadmap
Week 1
Set up custom domain + professional email
$1
Week 2
Upgrade to Vercel Pro + Supabase Pro
$45
Week 3
Build MVP with ChatGPT Plus + Cursor
$20
Week 4
Launch + integrate Stripe + Resend
$20
Week 5-8
Acquire first 5 customers at $29/month
$100
First Milestone
5 paying customers at $29/month = $145 MRR. Your $100/month stack is now profitable. Every additional customer is pure margin (minus Stripe fees).
FAQ
Is $100/month enough to build a real product?
Absolutely. At $100/month you have professional-grade infrastructure, premium AI tools, and no free-tier limitations. The only thing holding you back is execution, not budget. Most micro-SaaS products generating $5K-$10K/month run on stacks under $150/month.
Should I spend the $100 before I have revenue?
Yes, but only if you commit to shipping in 4 weeks. The $100/month stack removes friction: no worrying about rate limits, no 'free tier exceeded' errors, no subdomain URLs that look unprofessional. That psychological freedom is worth more than the money.
What if I can only afford $50/month?
Cut Vercel to free tier, keep Supabase Pro ($25), and split the rest between ChatGPT Plus ($20) and domain + email ($5). You lose unlimited bandwidth and edge functions, but for most micro-SaaS products under 50 customers, the free tier is sufficient.