мы приложили максимум усилий, но к

мы приложили максимум усилий, но к сожалению их последнее предложение в 30 000 осталось без изменений. если эта сумма вас устраивает, они готовы к подписанию договора.

Results (English) 1:

our best effort, but unfortunately their latest offering of 30 000 remained unchanged. if you are satisfied with this amount, they are ready to sign the contract.

Results (English) 2:

We have made every effort, but unfortunately their last offer in 30000 remained unchanged. If the amount you're comfortable, they're ready to sign the agreement.

Results (English) 3:

We have made every effort, but unfortunately their last proposal in 30,000 remains unchanged. if the amount you are satisfied with, they are ready to sign the treaty.