While the prices will drop a little once these are available, the real price drop will occur in about six months, when multiple generics become available for each strength (Teva has exclusivity on 100mg, 200mg, & 400mg celecoxib & Mylan has exclusive marketing rights for 50mg celecoxib).
Of course, for insured patients, generics typically have a set generic copay and the only price drop they'll see is in their copay.
For uninsured patients, multiple generic manufacturers are a necessity because they have no price insulation.
Don't forget to ALWAYS use an Rx discount card for any prescription not covered by your insurance (if you have any).
Also, the Partnership for Prescription Assistance can help you find programs that offer free & discount drugs (my wife gets 30 Duragesic per month for $0.00, courtesy of Johnson & Johnson (owner of Janssen) thanks to PPARx.