With endless luck, again gets the money (5)
I believe the answer is:
lucre
'the money' is the definition.
(lucre is a kind of money)
'with endless luck again' is the wordplay.
'with' is a charade indicator (letters next to each other).
'endless' means to remove the last letter.
'again' becomes 're' (prefix meaning 'again').
'luck' with its last letter removed is 'luc'.
'luc' put next to 're' is 'LUCRE'.
'gets' acts as a link.
(Other definitions for lucre that I've seen before include "(Filthy) profit" , "financial gain" , "Ulcer (anag)" , "Cruel kind of money, may be filthy" , "Possession of the rich" .)