When evaluating platforms for selling software, most people focus on the headline fee — "5% platform fee" or "10% of sales." But the true cost is the sum of three distinct charges: your platform subscription, the platform's take rate on each sale, and payment processing fees (Stripe). Understanding how these interact at different scales is the difference between choosing the right plan and leaving thousands on the table.
Platform subscription is a fixed monthly cost that doesn't change based on your sales volume. This is the base price of your Revnu plan — from $12/month on Starter to $379/month on Advanced. At low volumes, this fixed cost represents a larger percentage of revenue. At high volumes, it becomes negligible. This is why the Starter plan makes sense when you're just launching, but becomes relatively expensive per-transaction as you scale past a few hundred sales per month.
Take rate (platform fee) is a percentage of each sale that goes to the platform. Revnu's take rate decreases as you move up tiers: 6% on Starter, 4% on Basic, 3% on Grow, and 2% on Advanced. This is where the math gets interesting — a higher subscription with a lower take rate saves money once your volume crosses a specific threshold. On $10,000/month in sales, the difference between 6% ($600) and 2% ($200) is $400/month, which more than covers the subscription difference between Starter and Advanced.
Stripe processing fees are constant across all Revnu plans: 2.9% + $0.30 per transaction. These fees go directly to Stripe and are identical regardless of which Revnu plan you choose. However, they're an important part of your total cost calculation. On a $49 product, Stripe takes $1.72 per sale. On 100 monthly sales, that's $172 going to payment processing alone. This is unavoidable with any platform that uses Stripe, but it's significantly less than what all-in-one platforms like Gumroad charge (10% flat).
The calculator above models all three cost components simultaneously, showing you exactly where the crossover points are. Most sellers find that upgrading from Starter to Basic pays for itself around 200-300 monthly sales, and the jump to Grow makes sense around 500-800 sales. But these crossover points shift based on your average product price — higher-priced products hit the crossover sooner because the take rate savings are larger in absolute terms.