Adhesive sheets 15x20 - Recommended amount of sand

Adhesive foils 15x20cm	amount of sand	Price
1 - 4	12 x 20g sand	€ 2.80
1 - 9	19 x 25g sand	€ 3.62
10 - 19	19 x 50g sand	€ 7.13
20 - 29	19 x 75g sand	€ 10.28
30 - 39	19 x sand à 100g	€ 13.68
40 - 59	19 x 150g sand	€ 20.48
60 - 79	19 x 200g sand	€ 27.28
80 - 99	19 x 250g sand	€ 33.35
100 - 119	19 x 300g sand	€ 40.01
120-159	19 x 400g sand	€ 53.33
160 - 199	19 x 500g sand	€ 66.65
200 - 259	19 x 600g sand	€ 79.80
260 - 299	19 x 700g sand	€ 93.10
300-359	19 x 800g sand	€ 106.60
360-399	19 x 900g sand	€ 119.70
400-500	19 x sand à 1000g	€ 133.32