Replacement Front Glass Screen, Digitizer and Tools For Apple Iphone 3GS by Neewer Electronics Accessories (1) Date first available at Amazon.com: April 23, 2010 Buy new: $10.95 9 used & new from $9.87 (Ranking is updated hourly. Visit the Hot New Releases in Accessories & Supplies list for authoritative information on this product’s current rank.)

The rest is here:
#10: Replacement Front Glass Screen, Digitizer and Tools For Apple Iphone 3GS