Bulk eBay Best Offer using Login/Pass & Item #

I want a program which will submit whatever best offers I want... ie - I want to submit best offers of $400 for items number #1022302, #124090292, #2030912, etc This program/website/whatever needs to be set up so that I can tell it my username/password and then have it go login to my account and make the proper best offer's on the listed item numbers. This will be similar to how [login to view URL] works if you need an example