Following are a number of back-translations as well as a sample translation for translators of Isaiah 52:3:

• Kupsabiny: “God is saying,
  ‘You were left/allowed to be slaves
  and you shall not be bought for money.
  You will be redeemed/released for nothing
  so that no money will be paid out.” (Source: Kupsabiny Back Translation)
• Newari: “For the LORD says like this,
  "You were sold off for free
  So without giving any money, [you] are about to be set free."” (Source: Newari Back Translation)
• Hiligaynon: “For this is what the Lord GOD says, ‘You (plur.) were-taken-captives like a man who has-sold as slave without payment, therefore I will-redeem you (plur.) without payment also. In the time-past you (plur.) went to Egipto in-order to live there, and you (plur.) were-oppressed there. Later Asiria next/also oppressed you (plur.).” (Source: Hiligaynon Back Translation)