Hello I would like to ask if there is a a futures broker with an all-in rate below 2 usd per side for es. The best offer I got is 2.01 from amp. I also saw ddt that has 1.95 with rithmic trader but has minimum account deposit 3000 usd. Any other options? Thanks a lot.

DDT is 1.81 / side = 3.62 RT using Sierra/TT
I don't think you'll find cheaper for such a small account if you are depositing less than $3k.

DDT has also ninjatrader with the same price but they add 60$ for a monthly fee. Sierra is the same case if you see at the website there is an additional monthly fee starting from 20$ so the commission is actually higher. The truth is that they offer rithmic with 1.96 per side all-in which I guess is not bad although I am not sure what the data feed is.

yep that's true. Sierra in my opinion is a bargain for $20/month. It does everything I need it to do.
Rithmic is using Rithmic for it's feed I would assume.
Amp is charging for Ninjatrader also, it's just bundled into their commissions.
$60 for Ninja is the full lease version, pretty sure the direct edition with AMP is limited a bit compared to the full version.
It all depends on what you need, but I've searched around quite a bit and think these are fair prices until you start doing any larger contract/account size.

if they dont make a living your account might not be alive for long.