そんだけonly that, that's all (used in casual speech)

家主(やぬし)：「用(よう)はそんだけ？じゃあ帰(かえ)ってね。」

Landlord: "Is that all you need? Well, you can go home then." {only that, that's all (used in casual speech)}

そんだけお金(かね)があれば、十分(じゅうぶん)に子育(こそだ)ては出来(でき)ます。

If you have only that much money, you can sufficiently raise a child. {only that, that's all (used in casual speech)}

先輩(せんぱい)：「お前(まえ)に言(い)いたいことはそんだけだ。じゃあまたな。」

Senior: "That's all I wanted to say to you. See you later." {only that, that's all (used in casual speech)}

奴隷(どれい)：「ヒィ…それは拷問(ごうもん)器具(きぐ)ですね…そんだけは勘弁(かんべん)してください！」

Slave: "Eek...That's a torture device, isn't it...Please spare me only that!" {only that, that's all (used in casual speech)}

父(ちち)が息子(むすこ)に：「そんだけ努力(どりょく)したんだ。明日(あした)の試験(しけん)なんかへっちゃらだよ。」

The father said to his son: "You've worked hard enough. You'll breeze through tomorrow's exam, that's all." {only that, that's all (used in casual speech)}