There is a Breast Pump Trade Up Event at Toys R Us right now where you can bring in any used breastpump and get a Medela top rated breast pump for only $200! There are only 2 styles to choose, 1 of which is the Medela Pump in Style Advanced Double Electric Breast Pump (Orig - $250 - $310)!
Good offer from 12/25/2013 - 1/1/2014 only. Refer to the last page of the weekly ad for details - click here.
Before you buy, check with your insurance company whether they cover the full cost of purchasing a breastpump. You can possibly get one for free if you buy from only authorized medical supply retailers. Click here for more details.