What is the highest income from a gpt sites?

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hi the are so many gpt site that good money for make an offer cashcrate-prizelive-sendearnings-inboxdollarand.. cashcrate: cashcrate has tousand of offers for their members and give .50$ or more for any one so what is the best earnings from this site without any referral? is it possible that i make 10$-or-20$ for 20-40 offers everyday? and do the same 10-20 offer a day with another sites? and make 30-50$ a day without any referral with working 5-7 houre on computer? thanks