Riser Qty Each  
6 inch riser 5+ $0.39
8 inch riser 5+ $0.42
12 inch riser 5+ $0.45
18 inch riser 5+ $0.49
  Qty Each  
1+ $0.55
  Qty Each  
1+ $1.15
  Riser Qty Each  
6 inch riser 1+ $1.40
8 inch riser 1+ $1.42
12 inch riser 1+ $1.52
18 inch riser 1+ $1.65