it's a good investment. i bought 1 2 yrs ago n nvr regretted. i bf for 1 yr and lend the set to many many frens already. it's still in good working condition and i'm keeping it for #2. definitely worth the $$ if u intend to feed for more than 4 mths.
1 breast pump = $800
1 mth formula milk = $200
therefore it'll take u 4mths to breakeven, worthy investment