Bargain tin, lowest possible price? (4)
I believe the answer is:
snip
'bargain' is the definition.
(slang term for a good deal)
'tin lowest possible price?' is the wordplay.
'tin' becomes 'Sn' (Sn is the chemical symbol for tin).
'lowest possible price?' becomes 'ip' (I can't justify this - if you can you should believe this answer much more).
'sn'+'ip'='SNIP'
Can you help me to learn more?
(Other definitions for snip that I've seen before include "Surprisingly cheap item" , "Cut with scissors in small strokes" , "Something cheap or easy to do" , "Steal" , "Cut using pins" .)