After a lot of indecision, I ended up going home without buying anything.
After a long discussion, in the end nothing was decided.
last line of a renga
Technical term in renga (linked verse) poetry; the final 7-7 syllable couplet. Contrasts with 発句 (the opening stanza).
See also: 発句
In renga, the final stanza is called ageku.
After agonizing over it for a long time, I ended up deciding to quit that job.
After a long discussion, nothing was decided in the end.
とうとう is a plain, everyday adverb for 'finally', whereas 挙句 is more literary and specifically frames the result as the end of a lengthy or troubled process.
あげく usually implies the long process led to a bad or disappointing result, while 末に is neutral and can describe good or bad outcomes.
挙句の果て is a stronger, more emphatic version of 挙句, typically used when the final result is negative or exasperating, while 挙句 is the plainer form simply meaning 'in the end'.