Rates, Fees & Pitfalls

A swap can be smooth and cheap, or it can quietly cost you more than it should and occasionally get stuck. This final lesson of the course is the practical money-and-mistakes guide: where the costs hide, how to get a fair deal, and how to handle the things that go wrong.

Where the Cost Actually Is

A swap's price isn't a single "fee" — it's a few things stacked together:

• The spread (margin). Services make money on the gap between the market rate and what they give you. This is the main cost, and it varies — comparing services or using an aggregator drives it down.
• Network fees. You pay the mining fee to send your coin in, and the service's outgoing Monero fee is usually baked into the rate. Sending from a chain with high fees (e.g. Bitcoin when congested) costs more.
• The fixed-rate premium. Locking a rate costs a touch more than floating — you're paying for certainty.

Getting the Best Deal

• Compare. Check two or three services, or use an aggregator that does it for you, before committing.
• Mind the coin you send from. Swapping from a low-fee chain (e.g. Litecoin) can be cheaper than from Bitcoin during congestion, for the same end result.
• Bigger swaps amortize fixed costs. Network fees are roughly the same whether you swap a little or a lot, so many tiny swaps cost proportionally more than one larger one — balanced against the "test small first" rule.
• Watch the rate timer. On a fixed rate, send promptly. If the window lapses, you'll be re-quoted, possibly worse.

Minimums and Maximums

Every service has a minimum (send less and it may be lost or require manual recovery) and often a maximum per swap. Always check both before sending, and make sure your amount — after your own wallet's network fee — still lands above the minimum.

Common Pitfalls (and How to Avoid Them)

• Underpayment. If your wallet deducts its fee and the deposit arrives below the quoted amount, the swap may pause or refund. Send the exact requested amount.
• Late deposit on a fixed rate. The window expires; you get refunded or re-quoted. Use a fee that confirms in time.
• Floating-rate surprise. The market moved while your coin confirmed, so you got less XMR than the headline quote. Prefer fixed unless you accept this.
• Wrong or mistyped address. Irreversible. Verify first/last characters every time; beware clipboard malware.
• Surprise-KYC hold. Covered in Choosing a Swap Service Safely — pick low-risk providers and test small.

If a Swap Gets Stuck

1. Don't panic — keep your swap ID and your deposit transaction ID.
2. Check the swap status page; many "stuck" swaps are just waiting on confirmations.
3. If it genuinely failed, the service refunds to your refund address — the reason it's never optional.
4. Contact support with your IDs if needed. Reputable services resolve these routinely.

The Bottom Line

Compare for a fair spread, send the exact amount within the rate window, always set a refund address, and test small on anything new. Do that and swapping is cheap, fast and reliable. For the trade with the fewest trust assumptions of all — no service holding your coins at any point — see the advanced lesson on Atomic Swaps.