A less chaotic form of auctions (5)
I believe the answer is:
sales
'form of auctions' is the definition.
'sales' can be an answer for 'auctions' (auction is a type of sale). I'm not sure about the 'form of' bit.
'a less chaotic' is the wordplay.
'chaotic' is an anagram indicator.
'a'+'less'='aless'
'aless' with letters rearranged gives 'SALES'.
Can you help me to learn more?
(Other definitions for sales that I've seen before include "Income received for goods and services over a given period" , "Business department - retail events" , "commercial exchanges" , "a feature of Boxing Day?" , "Marketing" .)