Other 'cost per day' for geophysical surveys such as the Spontaneous Potential, electromagnetic, G.P.R, resistivity and seismic refraction and reflection methods can also be added if anyone of you intellectuals has access to them.
Please be more specific about what project you mean. Is it an Airborne Laser Scanning (ALS), Terrestrial Laser Scanning (TLS), Mobile Laser Scanning (MLS) or an UAV-based (Unmanned) Laser Scanning (ULS) project? How large is the target (area)? Do you need the vegetation and/or the ground surface, maybe some built-up structures?
The real costs are also highly dependent on where do you want to measure and what is your requested accuracy. If you can tell us more about the project, you can get a better cost estimate. I do believe that the data in the document cited by Jonah above are quite outdated; since 2010 the technology developed very rapidly (e.g., now you have ULS, that was not available five years ago).
One thing the cost estimates provided by Jonah (above link p 55) show is that a lot of the cost in LiDAR survey comes from the time/people/computers required to process and analyze the data. US $1500/day for a geophysical surveyor (GPR, Soil Res, Magnetometer, LiDAR) in the field is kind of typical ballpark--that would put some data in hand, but further processing and analysis adds time and money. If you are a student, then you might be able to defray additional processing costs by seeking those resources out in your University. Just be sure that you request copies of the data as part of contracting a surveyor.