Ambulance:

• All electrical completed to spec
• Weather sealed
• Reliable engine
• 15k to 20K
• If motor dies, weill have to move out
• Rugged materials

Trailer conversion

• Maybe 10K for the trailer. 5 to 10K on materials. Weeks to months for labor
• Can detach vehicle and leave home
• More customizable
• Large rear door
• Separate from motor
• More wheels, more insurance