出せば

if (someone) pays, if (someone) puts up, if (someone) lets out, if (someone) releases

→ 出す
出せ pay (money or expenses) + ば Conditional (“if”)
verb · informal Rare #42,978
if (someone) pays, if (someone) puts up Conditional form of 出す.
JA: お金を出せば、これを買えます。
EN: If you pay, you can buy this.
if (someone) lets out, if (someone) releases Conditional form of 出す.
JA: 犬を外に出せば、喜びます。
EN: If you let the dog outside, it will be happy.
Conjugation of 出す

金を出せば子供は返すと言ってる

They say they’ll return the child if you pay up.

— High and Low (1963)

身代金を出せば子供は無事に戻ると保証できますかね

Can you guarantee that the child will be returned safely if we pay the ransom?

— High and Low (1963)