battles / Payments
Gr4vy vs SellersFi
Gr4vy ($2,500/mo/mo, vibe code 3/10) vs SellersFi ($500/mo/mo, vibe code 3/10). Gr4vy is the easier one to rebuild yourself — here is what you lose either way.
Payments
$2,500/mo/mo
- MVP
- 1 month
- Full replacement
- 12-24 months, due to PCI-DSS Level 1 certification, token vault security, and dozens of payment gateway integrations
easier to rebuild
get the build prompt →Payments
$500/mo/mo
- MVP
- 1 week (dashboard only)
- Full replacement
- Impossible (requires banking partner network, lending licenses, and capital balance sheet)
price gap / year
$24,000/mo
running both / year
$36,000/mo
our call
Start with Gr4vy — highest vibe code, weakest moat.
Gr4vy
Building a basic routing engine is straightforward, but replicating a secure, PCI-DSS Level 1 compliant token vault and dozens of gateway integrations requires continuous compliance audits and security overhead. Replacing Gr4vy with custom code introduces massive regulatory liability and integration maintenance burden.
you can rebuild
- Basic conditional payment routing rules engine
- Merchant admin dashboard for transaction monitoring
- Simple failover retry logic between two primary gateways
- Normalized unified checkout API schema
- Transaction metadata logging and analytics
what you lose
- PCI-DSS Level 1 compliant card data tokenization vault
- Out-of-the-box integrations with 50+ payment gateways and APMs
- Automatic 3D Secure 2 (3DS) / SCA step-up authentication handling
- Infrastructure isolation per merchant account
- Continuous API maintenance and compliance updates from payment providers
real moats
- PCI-DSS Level 1 certification and security liability absorption
- Broad pre-built integration catalog with PSPs, buy-now-pay-later (BNPL) providers, and fraud engines
- Universal token vaulting capable of cross-PSP token migration
open source escape hatches
- Hyperswitch Apache-2.0
- Kill Bill Apache-2.0
- Medusa Payment Plugins MIT
SellersFi
SellersFi is an asset-backed financial platform providing balance-sheet capital, underwriting models, and banking infrastructure. While building a dashboard to aggregate store metrics takes a few days, an AI agent cannot extend capital, assume default risk, or satisfy money transmitter regulations.
you can rebuild
- Revenue and cash flow visualizer dashboard
- Shopify, Amazon, and Walmart API sales data fetcher
- Payout schedule and sales velocity tracker
- Working capital estimate calculator
- Historical revenue versus expense reporting
what you lose
- Direct revenue-based working capital advances
- FDIC-insured digital business bank accounts
- Multi-currency conversion and international transfer rails
- Automated credit underwriting and credit lines
- Corporate credit cards with cashback programs
real moats
- Access to debt funding and capital reserves to execute financing
- Regulatory compliance licenses, AML/KYC protocols, and banking sponsor agreements
- Proprietary risk assessment models derived from historical merchant default data
open source escape hatches
- Formance Ledger Apache-2.0
- Firefly III AGPL-3.0
- Midaz Apache-2.0
Questions people ask
Which is easier to rebuild with AI, Gr4vy or SellersFi?
Gr4vy. It scores 3/10 on vibe code with a moat of 6/10, so an AI-assisted MVP takes about 1 month and a full replacement about 12-24 months, due to PCI-DSS Level 1 certification, token vault security, and dozens of payment gateway integrations.
Which one costs less, Gr4vy or SellersFi?
SellersFi at $500/mo/mo for a typical mid-market store. The gap between the two is about $24,000/mo a year.
What do I lose if I replace Gr4vy?
PCI-DSS Level 1 compliant card data tokenization vault Out-of-the-box integrations with 50+ payment gateways and APMs Automatic 3D Secure 2 (3DS) / SCA step-up authentication handling
What do I lose if I replace SellersFi?
Direct revenue-based working capital advances FDIC-insured digital business bank accounts Multi-currency conversion and international transfer rails
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