be a burden

That request is a burden.

その頼みは負担です

That request is a burden because it costs a lot.

その頼みは費用が多くかかるので負担です

That request is a burden in my current situation because it costs a lot.

その頼みは費用が多くかかるので今の私の事情では負担です

That request is a burden to handle alone in my current situation because it costs a lot.

その頼みは費用が多くかかるので今の私の事情では一人で処理するには負担です

That request is more of a burden than I expected to handle alone in my current situation because it costs a lot.

その頼みは費用が多くかかるので今の私の事情では一人で処理するには予想以上に負担です