re: Brick Paver Install Question

I made a =/- 200 square foot patio with the 12 inch square pavers. I leveled with sand, packed down, and used those concrete/foam sheets (used for bathroom tile backing) which I drilled holes every 6 inches or so. I put about an inch of crushed stone topped with sand then the pavers. It has held up well for several years.

I don't know if it was more or less work, but it was cheap, quick and solid.

FWIW I had enough of the concrete sheets from a prior project already. They're typically 3X5 feet and reinforced with fiberglass or something. Think they're about $11 each at homedepot. Fairly light and not fragile. Easy to cut/drill.