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SPSeast

Developers & SaaS

Build payments into your product without giving away the economics

Prime Gateway helps SaaS teams, agencies, and app builders integrate card acceptance with APIs, SDKs, and tokenization—while keeping merchant relationships, branding options, and processing flexibility beyond standard flat-rate platforms.

We partnered with

Prime Gateway

Build SmarterLaunch FasterMonetize Every Transaction

Prime Gateway empowers developers and SaaS builders with everything they need to integrate payments, ship terminals, and earn recurring revenue — all without being locked to a single processor.

  • Prebuilt SDKs for iOS, Android & Web
  • One-click tokenization & merchant onboarding
  • Compatible with the top 95% of U.S. processors
  • No revenue loss via third-party platforms like Shopify

terminal.sh

Prime Gateway

Everything Developers Need

Build better experiences. Keep clients longer. Earn more with every transaction.

Develop faster with tested libraries—no need to start from scratch. Get your client up and running in days, not weeks.

Hand holding a smartphone showing a Prime Gateway mobile payment checkout screen

Payment devices

Embed Hardware & Mobile Payments

Choose from a powerful suite of pre-certified payment devices that plug right into your apps or POS — whether it's mobile, countertop, or enterprise-scale retail.

Great for delivery, pop-ups, or events

PAX A800 mobile payment terminal on a compact stand

Compare before you commit

Compare SaaS payment fees before you embed checkout

Stripe and Lemon Squeezy publish straightforward online transaction fees. SPSeast can review keyed, card-not-present, and terminal pricing for software platforms, marketplaces, and SaaS billing flows.

Published transaction fees at a glance

Through SPSeast

SPSeast

Transaction fees

  • Online paymentsKeyed / online debit ~1.3% + 10¢Keyed / online credit card starts at ~2.3% + 10¢
  • Terminal / card-present paymentsCard-present / terminal debit ~0.5% + 10¢Card-present / terminal credit card starts at ~1.8% + 10¢

Stripe

Transaction fees

  • Online paymentsCards and wallets 2.9% + 30¢
  • Terminal / card-present paymentsTerminal POS 2.7% + 5¢

Lemon Squeezy

Transaction fees

  • Online payments5% + 50¢
  • Terminal / card-present payments

Rates shown are public reference points or estimated ranges for discussion only. SPSeast pricing depends on review, approval, business type, transaction mix, and card type—not every platform qualifies for the lowest rate. Verify current Stripe and Lemon Squeezy pricing before deciding. Final pricing is subject to underwriting, processor approval, and the written merchant agreement.

Building payments into your software?

We help SaaS teams and developers compare Prime Gateway integration, processing models, and merchant onboarding before they commit.