When I choose the option users to create listings for free. I get the add listing form with image limit 100 and category limit 30, which is not correct, due to the fact that in add-form-categories.php the max limit is set to 10. ($mxCats = 10;) I did not test the image limit. I think it would be better to enter the limits in the backend. 100 images limit is too much for free listings.