Lifetime subscriptions that get canceled.
Unlimited data plans that are really limited.
Unlimited storage that is actually limited.
Perpetual software licenses that are no longer supported.
"Free" software licenses with no support of any kind whatsoever.
I don’t see how free software licences ‘sound too good to be true’, in that they don’t even sound relevantly good: they don’t suggest in the slightest that support will be available.