Correction - from my billing page it's $4.50 a month, from the resize page it is $6 so I'm guessing I am grandfathered in to some older pricing
Imagine the petabytes of data transferred through the internet saved if a couple RSS clients added that method.
If OP reduced 30 months of posts in rss to 12 months then this 13mb would be 5mb a day.
Using Cloudflare free plan and this static content is cached without any problem.
I think making clients behave correctly is much more sustainable solution, although we could do better than doing so at the cost of the end users.
And since I've ran integrations that connected over 500 companies. I know what a rouge client actually looks like and 72 requests per day and I wouldn't even notice.
It is free and easy to scale this kind of text based blog.
Hey, I think you mistook HN for Reddit.