THAT is a good deal. I saw one bulk sale of 70 pounds of Lego (yes, 70 pounds); it was a combination of about several dozen sets.
I like your idea of buying several complete sets and gifting them over a long period of time; that is efficient! How did you keep them hidden until it was time to wrap them?
In the garage, and a strict rule: If you see your presents, they go back. Actually, they were old enough that after the first few years they did see them and put dibs on this or that set. :D I had 3 boys to give them to.
What was the shipping on the 70 lbs?
*although I am done buying Legos! Some of these sets were discontinued themes, which made them harder to find.
One note: We were a military family and the kids were used to seeing things in boxes in the garage, so it didn’t seem strange to them or attract undue attention.