How much does a land developer make?

It varies with your experience and where you work. In Texas, you may start off making around $200/day plus expenses if you have no experience. Experienced landmen (10 years or more) can make $400 or even $500 a day in some places--especially if they're working in the Barnett Shale area (Tarrant County and the surrounding areas). It seems like most people I know who have between a year and five years of experience are making around $300/day or $350/day, plus expenses.