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Sol Battles - Economics & Cost Analysis

Revenue (Platform Rake)

Game Mode Rake % How It Works
Oracle 5% Taken from losing pool before distribution
Clawdbot Battles 5% Taken from prize pool
Spectator 5% Taken from losing pool

Revenue Examples

Scenario Volume Rake
100 users × 0.1 SOL/day avg 10 SOL/day 0.5 SOL/day
500 users × 0.5 SOL/day avg 250 SOL/day 12.5 SOL/day
1000 users × 1 SOL/day avg 1000 SOL/day 50 SOL/day

At $140/SOL: 50 SOL/day rake = $7,000/day or $49,000/week

Operating Costs

1. CoinMarketCap API

Current Usage:

  • priceService: 1 call every 30 seconds = 2,880 calls/day
  • Total: ~2,880 calls/day = ~86,400 calls/month

CMC Pricing:

Tier Calls/Month Price Enough?
Free 10,000 $0 ❌ No
Basic 30,000 $29/mo ❌ No
Hobbyist 120,000 $79/mo ✓ Yes (barely)
Startup 500,000 $299/mo ✓ Yes

Recommendation: Hobbyist tier at $79/month should work, but consider Startup ($299/mo) for headroom.

Optimization Option: Reduce priceService from 30s to 60s intervals = 1,440 calls/day = 43,200/month (Basic tier would work)

2. Solana RPC (Carbium)

Usage Types:

  • Balance checks
  • PDA operations (deposit/withdraw)
  • Payout transactions

Costs:

  • Carbium pricing: Check your plan (likely usage-based)
  • Transaction fees: ~0.000005 SOL per transaction

Estimated Weekly:

  • 1000 transactions/week × 0.000005 SOL = 0.005 SOL (~$0.70)
  • RPC calls: Depends on your Carbium plan

3. Helius (NFT Data)

Usage: Profile picture NFT fetching

Costs:

Tier Requests/Month Price
Free 100,000 $0
Starter 1,000,000 $49/mo

Likely: Free tier sufficient unless heavy NFT usage

4. Infrastructure

Render (Backend):

Plan Price Specs
Free $0 512 MB, sleeps after inactivity
Starter $7/mo 512 MB, always on
Standard $25/mo 2 GB RAM
Pro $85/mo 4 GB RAM

Recommendation: Standard ($25/mo) for production

PostgreSQL (Render):

Plan Price Storage
Free $0 1 GB, expires in 90 days
Starter $7/mo 1 GB
Standard $20/mo 10 GB

Recommendation: Standard ($20/mo) for production

Vercel (Frontend):

Plan Price
Hobby $0
Pro $20/mo

Likely: Free tier works, Pro if you need more bandwidth

Weekly Cost Summary

Minimum Viable (Low Traffic)

Service Weekly Cost
CMC Hobbyist $18.25
Render Standard $5.75
PostgreSQL Standard $4.60
Vercel Free $0
Helius Free $0
Solana TX fees ~$1
Total ~$30/week

Production Ready (Medium Traffic)

Service Weekly Cost
CMC Startup $69
Render Pro $19.60
PostgreSQL Standard $4.60
Vercel Pro $4.60
Helius Starter $11.30
Carbium RPC $??
Solana TX fees ~$5
Total ~$115/week + Carbium

Break-Even Analysis

At minimum costs ($30/week):

  • Need 0.21 SOL/week in rake revenue
  • At 5% rake = 4.2 SOL/week in volume
  • = 0.6 SOL/day average volume

At production costs ($115/week):

  • Need 0.82 SOL/week in rake revenue
  • At 5% rake = 16.4 SOL/week in volume
  • = 2.3 SOL/day average volume

This is very achievable. Even 10 users betting 0.25 SOL/day = 2.5 SOL/day volume.

Cost Optimization Opportunities

  1. Reduce CMC calls:

    • Change priceService from 30s → 60s (halves API usage)
    • Use Pyth for real-time, CMC for fallback only

  2. Cache aggressively:

    • Price history cached on backend
    • Memecoin list cached on backend

  3. Batch transactions:

    • Combine multiple payouts into single TX where possible

  4. Self-host RPC:

    • Run your own Solana validator (expensive but unlimited)
    • Only worth it at very high scale

Referral Program Economics

Currently configured:

  • Referrer gets 10% of rake from referred users' bets
  • Referred users get 1% rake discount

Example: User bets 1 SOL on Clawdbot Battles

  • Normal rake: 0.05 SOL (5%)
  • Referred user rake: 0.04 SOL (4%)
  • Referrer kickback: 0.004 SOL (10% of 0.04)
  • Platform keeps: 0.036 SOL

Summary

Metric Value
Weekly Operating Cost $30-115
Break-even Volume 2-16 SOL/week
Rake Rate 5%
Biggest Cost CoinMarketCap API

The economics are favorable - even modest usage easily covers costs.