I have a great mother in law, but she wouldn't know a good deal from an LFS if it slapped her in the face. As great as she is, I envy you for having a mother in law that knew enough to grab all the free rock she could get her hands on for you.
I know what you mean. I guess I'm just blessed with such a great second mom. I hit the floor when she called and told me the "goodies" she got for me.
I think if I hadn't hit the lottery so to speak with the LR my mom got me, I would have had to try making my own. Some people have put some very good threads together on this site to show how it is done. I just think it is ridiculous to charge so much for LR. If you buy a 15lb piece it'll run you around $120 around here...NOW thats almost as much as my first and last born if you consider a 180gal needs about 20X that many lbs
Agggh you win some you loose some with this hobby.