Hello, we are a professional translation company and we can offer you a good quality work as I believe that you need it to be done really well. As you said it's about 1.5 hours of recorded voice, I believe it would take us something like 3 or maximum 4 hours to transcribe and proofread. We are waiting for a contact and ready to start working immediatelly, we can be in contact with you through instant messengers while doing the job and we'll only stop when it's ready to deliver to you. Thank you and regards, Info Carioca