I am trying to buy the Proclear 1-Day 90 pack. But one website sell it for $73, and another one only sell it for $39.04. How can it be such different?
http://www.1800contacts.com/lens/proclear-1-day-90
http://www.opticontacts.com/contact_lenses/CLPC1DCV_7/Proclear-1-Day-90-Pack.html?mv_source=amazon_sp
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