What were the Halo 1 sales?
If you mean how much were they, I bought my Halo: Combat Evolved (1) for the PC for only 4 dollars plus shipping on Ebay. For the xbox console it is around 1 to 5 dollars plus shipping if you are able to find a good deal on any of the popular trading sites. In stores (if any even sell Halo 1 anymore) they are probably around 10 dollars. When Halo 1 first came out they were as expensive as most new games, around $50-70. Most people bought them new, although halo 2 was bought out faster and also costed more.