Been digging into some older research on subprime credit cards and honestly, the numbers are pretty wild. Back in 2017, NerdWallet did this comprehensive study that really exposed how expensive these cards are for people trying to rebuild their credit.

Here's what stood out to me: over 16 million Americans with credit scores below 600 were holding these cards, thinking they'd help improve their credit. Sounds reasonable, right? But the actual cost was brutal. The average subprime credit card was charging people around $150-165 per year just in unavoidable fees - and that's before interest. When you multiply that across all those cardholders, we're talking over $2.5 billion annually just in fees. That's insane.

What really got me was the comparison with secured cards. You know, the ones where you put down a cash deposit? Those averaged only $19-26 per year in fees. So you're looking at a difference of $130-150 per year between subprime credit cards and a much safer alternative. Most people don't realize secured cards are even an option.

The utilization numbers painted an even darker picture. The average person with a subprime credit card was using 94% of their available credit limit. For context, people with excellent credit were only using about 11% of theirs. And get this - while credit limits for subprime cardholders were actually shrinking, limits for people with excellent credit were growing. It's like the system is designed to keep people stuck.

What bothered me most was that subprime specialist issuers weren't helping people actually improve their credit. Only 1 out of 10 cards they looked at offered free credit score monitoring, even though 15% of people surveyed said they'd be motivated to improve their credit if they could track their score regularly. For younger people especially - almost a quarter of 18-34 year olds - access to their credit score would've made a real difference.

The study made a solid point though: there are better ways to build credit without getting trapped by expensive subprime credit cards. Secured cards, becoming an authorized user on someone else's account, or taking out a credit-builder loan all work better. The key is making on-time payments consistently over time.

I think about this research whenever I see someone considering subprime credit cards. Sure, they're easy to get approved for, but that's kind of the trap. The real move is either going with a secured card or exploring other options while you rebuild. It takes longer, but you're not hemorrhaging money on fees while you're trying to fix your credit.