cages/crates

hi,
does anyone here know where to get cages which is good but not so ex.. around 70 to 80? i have small poms and need to get a cage so i can trained him since he is very noughty in doing his bussiness..
if anyone know please tell me,
thanks.

note: i search in pet shops but all over 80 dollars . and i want the stainless steel one.