The value of the 100 coins is stated in the bonus page of those casinos. You can find this information above the faucet amount details of the bonus page.
OK, I found it for LuckyDice and Bitkong. You are right, each coin is worth 1 cent. I will mention this in the table.
Information about Simpledice has now also been added to the OP. I couldn't find more details about their faucet but since the site is identical to Luckydice and SimpleDice I guess the rules are also the same. The faucet should be claimable if the balance is 0.
I will take a look at DuckDice as well.
It's off topic here, but I want to inform you that Bk8 has added Bitcoin withdrawal option again. I can't check the details of their min withdrawal limit for Bitcoin as I'm not receiving the OTP code. Try to collect the details and update it in your "Withdrawal Fees and Withdrawal Amounts" topic.
Yes. panjul07 mentioned it in my thread. As soon as I can confirm the amounts, I will add them to the table.