I found a supplier of "chlorhydroquinone". Its cost is $1120.00 for 100 grams @ 90% purity, plus shipping and handling.
I will not and can not keep 25 kg of chemicals around my home. 1 to 5 pounds is the most that I would allow, for safety or any other reason. But 25 kg is totally out of the question.
I am going to look into this buy, and see if I can swing it. Besides, I am stuck with the P-benzoquinon. So, in for a penny, in for a pound.