The seller has decided the domain costs $1m. It’s unlikely any “cart” they’ve set that up with would allow such a transaction. It’ll be some kind of bank to bank transfer that is needed with various fraud checks.

Also as with most expensive purchases, the list price is total bullshit. When you see expensive price tags, the final price will be less unless demand is high.

When you see expensive apartments or properties up for $1m the selling price is likely to be less unless there is a lot of competition. In property hotspots it is getting normal to pay the full price but in all areas the prices are inflated deliberately to see what the seller can get away with. The actual price is what someone is willing to pay. People aren’t fools - they negotiate.

If you’ll haggle over a $10k car then of course you’d haggle over a $1m domain. (And if you’re not haggling the price down on a $10k car then you’re an idiot and wasting money)

A $1m domain - it might sell for $900k or $100k or never sell as it’s actually worthless.