The Python Patrol set in 2003 received mixed reviews. Collectors loved the fact that you got 5 unique army builders. They also loved that Python Patrol was returning. But, the actual figure releases didn't really fly. While the figures matched the vintage vehicles: few collectors in 2003 really focused on the them. The figures not being compatible with the vintage Python Patrol was a detriment. So, while collectors did buy quite a few sets, the Python Patrol stuck around at retail for quite a while. Due to its pegwarming, the Cobra Infantry set in 2004 only got a production of 20,000 sets instead of the Python Patrol's 25,000. Now, though, this set is more appreciated by collectors and has gotten a bit harder to find. For me, the highlight of the set was the Lamprey. Here's the best of him from around the web.
Python Lamprey at JoeBattleLines.com
Violentfix's Python Lamprey
OGToys.com Python Lamprey