bicycles cross hybrid

Help me pick a hybrid bike please?
I’m looking to buy a hybrid bike for commuting and I’ve arrived at the following three choices:
http://cgi.ebay.com/New-18-Womens-Shimano-21-Spd-Hybrid-Cross-Bike-Bicycle_W0QQitemZ180398764644QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item2a009ab264&_trksid=p3286.c0.m14
http://cgi.ebay.com/NEW-ALUMINUM-HYBRID-BICYCLE-COMFORT-ROAD-BIKE-M-L-WHITE_W0QQitemZ140338338164QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item20acd11974&_trksid=p3286.c0.m14
http://www.target.com/Ladies%E2%80%99-Schwinn-700C-Trail-Hybrid/dp/B000KZ4MI6/sr=1-1/qid=1250851439/ref=sr_1_1/178-8593082-2253426?ie=UTF8&search-alias=tgt-index&frombrowse=0&index=target&rh=k%3Aschwinn%20trail%20way&page=1
My budget is $250, the last one I can purchase from a local Target store. Which one should I purchase or could you recommend me a better bike for the budget?
The 2 bikes that you are thinking about buying online would be delivered unassembled, so apart from any shipping costs, you would also have to have the bikes put together. The bike from Target would be assembled. but not by a qualified mechanic, and any problems you encounter with the bike cannot be dealt with by the store. Bike shops may seem more expensive, but the extra money you pay is for the service they are able to offer, making sure the bike is well adjusted and fitted to you. Buying online or from a box store gives you none of this, so if you plan to go this way, it would be a good idea to learn how to maintain and repair your bike
Bicycle Tips & Maintenance : How to Buy a Hybrid Bike