Poor person saving bears for one grand (6)
I believe the answer is:
beggar
'poor person' is the definition.
(beggar is a kind of poor person)
'saving bears for one grand' is the wordplay.
'saving' becomes 'bar' (I've seen this before).
'bears' indicates putting letters inside (some letters carry or bear others).
'for one' becomes 'eg' (both can mean 'for example').
'grand' becomes 'g' (G is short for grand as in a thousand).
'eg'+'g'='egg'
'bar' enclosing 'egg' is 'BEGGAR'.
(Other definitions for beggar that I've seen before include "poor bloke" , "Pauper who lives by soliciting" , "One with no choice?" , "One may entreat you" , "One seeking alms" .)