LEGEND FOR PRICES, WEIGHT, ETC.

All the information is in the image title:

NGF1-1-0705_45_300 means:

NGF (F = female M= Male)
13-1 is the unique ID number
0705 is the date the shot was taken (July 5th)
_45 is the weight of the gecko at the time of shooting
300 is the price of the gecko in dollars.