But...they explain it in the Snopes article. Did you not read the article while making a claim about them being disingenuous?
From the article: However, a number of factors were elided in that report. The value of donated hair when applied to actual hairpieces provided to children relied on a projection, not actual processing and manufacturing costs...92% of the charity’s expenses allocated to program costs. Less than 7% of expenses went to administrative costs and salaries, and CEO Linda Borum’s most recently listed salary (for fiscal year 2015) was a modest $64,866.
Additionally if LOL charged patients in the past they claim to not do so now in their FAQ.