Free Serif Software makes old versions of their photo editing, vector drawing and html editing software available. You can download it and it's "free for life" but you have to sign up for their newsletter. Presumably the newsletter tells you that you can upgrade to the latest version of their software for $60. They also say that you can unsubscribe to the newsletter so you don't have to worry about spam for life as well. For example you can download and use "Draw Plus 4" all you want but it you want to upgrade to "Draw Plus 7" you have to pay their current sale price of $60 (normally $80). I've never used it and I can't vouch for it but it's out there.
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