The phrase "for one's worth" implies the value or cost of something or someone. There are numerous synonyms one could use to convey a similar meaning. Some options include "for one's benefit," "for one's advantage," "for one's gain," "for one's profit," and "for one's sake." Each of these phrases emphasizes the importance of doing something for the benefit or gain of oneself. Another similar phrase includes "in one's best interest," which again highlights the importance of acting in a way that benefits oneself. Overall, by utilizing these various synonyms, one can convey a similar meaning to "for one's worth" in a diverse and dynamic way.