Just had to replace a Kindle. They sell one version now, with ads, and you can turn them off permanently by making a one-time payment though your Amazon account. They also offer it as a check box during checkout.
I bought a Kindle a few years ago. At the time I wasn't working regularly so didn't have much cash. As a result I didn't check the box and have ads on my Kindle.
The ads are almost entirely irrelevant but seem benign enough since they're always for other books (mostly self-published, I suspect) in the Kindle store. They're also limited to the lock screen so hardly intrusive.
It's only recently that I've occasionally considered paying the £10 (?) to get rid of them and the reason is pure vanity: I'm now (fortunate to be) in a fancy job with a fancy title and I don't want to look like a cheapskate.
The ads are almost entirely irrelevant but seem benign enough since they're always for other books (mostly self-published, I suspect) in the Kindle store. They're also limited to the lock screen so hardly intrusive.
It's only recently that I've occasionally considered paying the £10 (?) to get rid of them and the reason is pure vanity: I'm now (fortunate to be) in a fancy job with a fancy title and I don't want to look like a cheapskate.