Posts money for bets (6)
I believe the answer is:
stakes
This clue could be a double definition.
'posts money' is the first definition.
'stakes' can be an answer for 'posts' ('stake' can be a synonym of 'post'). I am not sure about the 'money' bit.
'for bets' is the second definition.
(staking is a kind of betting)
Can you help me to learn more?
(Other definitions for stakes that I've seen before include "Pointed poles or bets" , "Bets or pointed sticks" , "Amounts bet; posts" , "Wagers with pointed poles" , "pickets" .)