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You couldn't just get a single IP address, you'd have to buy a routable block that contains that IP address, which while I believe technically is a /28, in practice is a /24 (256 addresses)

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Can you generally advertise a /24 now? I thought the filters were rougher than that.

/24's are generally considered globally routable these days, and have been for quite some time. I suppose there are still some providers out there who filter them, but we'd both be showing our age if we speculated on those names :)

In general, /24's have been routable since the 80's.

There have been periods of time where various providers had filters (in certain ranges) to prevent routing table bloat.

And how much is a /24 then? $10 * 256 ?

I'd consider that pretty damn cheap if you consider that and IP address as a form of Intellectual Property.

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