Swing Breast pump - $129
The only single electric personal use pump with breakthrough 2-
Phase Expression® technology for maximum milk flow. First
researched and developed for hospital breastpumps, 2-Phase
Expression is an advanced pumping pattern that mimics a baby’s
natural nursing rhythm by pumping in two distinct modes, Battery
operated, small and hooks to your belt for hands-free mobile
pumping. This amazing little pump has the same suction power as
the pump in style advanced, but sells for roughly 1/2 the price.   
Click to see the product manual
The Harmony™ Breast Pump - $30
Feels more like your baby than any other manual pump. The only
manual pump with breakthrough 2-Phase Expression® pumping for
maximum milk flow. First researched and developed for hospital
breast pumps, 2-Phase Expression is an advanced pumping pattern
that mimics your baby’s nursing rhythm by pumping in two distinct
modes:

Let-down Mode—Simulates your baby’s initial rapid suckling to initiate
faster milk flow or “let-down.”
Expression Mode—Simulates your baby’s slower, deeper suckling for
maximum milk flow in less time.
Single pumps are great for short term separation from the baby. To be able to
pump so mom and dad can have an evening away from the baby.
Babies Are Blessings
Single Pumps