Such situation, tried to send tokens on exchange, first I set defolt (21000) gas limit - have a mistake "out of gas"
Next, I put 41000 gas limit - "out of gas"
Okay - 51000 gas limit = "out of gas"
Lmao, wtf?

Is it okeay that 0,5$ is not enough for transaction?

What should I put next?
You would use
https://etherscan.io/gasTrackerPersonally, I am using this one
https://ethgasstation.info/ to track ether Gas price. but sometimes it does not work, I don't know why it happened!! You can bookmark this site for future purposes.
Same here, sometimes it does not work but sometimes ok. It seems that the ethgastation is delayed on tracking the exact gas price but still it helps just make sure to use gas price which is higher than normal gas price.
If he is trying to send it to other wallets some provider giving you or recommend you what is the exact gas limit that you should use to be able to confirm the transaction.
I'm using metamask and I always use their default gas limit and I haven't any issue yet so I recommend you to use metamask than using a MEW.