Family Tree DNA became the first company to target the genealogy market in North America with a Y-DNA test, 12 markers for $US 219, in mid 2000. By early 2002, much delayed from the original announcement, Oxford Ancestors were offering a 10 marker test for $US 220. In June 2002 FTDNA, having captured the early adopter premium, reduced the price to $US 149. In August 2002 FTDNA started offering 25 marker tests for $US 209.
In Spring 2003 FTDNA prices were increased, by $US 10 for the 12 marker test and $US 20 for 25 markers. A 37 marker test was added in February 2004 for $US 289.
In April 2006 the FTDNA range was expanded again to what was eventually set as a 67 marker test for $US 349. At the same time the price for the 12 marker test was reduced by $US 10, and for the 37 marker test reduced by $US 30.

That's two decreases and one increase. Do you see a price trend? Note that the prices quoted are the rates for those not testing through a group project.
Come back for a second part to the analysis in the next post.