请教catch-22里的这句话怎么翻译？译林及上海出版社翻译的我有点不懂。

I upped my kickback fee with those two drugstores. 这句话怎么翻译？谁付给谁酬金？

译林出版社是这样译的：“我便加倍付酬金给那两家药铺。”

上海出版社81年版是这样译的：“我给那两家药房增加了酬劳费。”

"It was a godsend," Doc Daneeka confessed solemnly. "Most of the other doctors were 
soon in the service, and things picked up overnight. The corner location really started 
paying off, and I soon found myself handling more patients than I could handle 
competently. I upped my kickback fee with those two drugstores........ 从这段可以看出
Doc Daneeka很忙。他的病人拿他开的药方去那两家药店买药，给药店带来生意。是不是药店应付给
Doc Daneeka酬金？

谢谢！