American Express Blue Cash cards now allow exact redemptions, without requiring it to be a round $25 redemption. There still is a $25 minimum, but once you hit that threshold you can redeem the full amount without being limited to $25 increments.
I was able to cash out $65.31 just now:
This is a very welcome change. They also made the checkout process a bit easier by just requiring an email address, no card number/code.
Hat tip to uscreditcardguide