Reference

Item Crafting Cost by Level

Level Base Item Cost
1 0.5 gp
2 1 gp
3 2 gp
4 3 gp
5 5.5 gp
6 8 gp
7 11 gp
8 14 gp
9 19 gp
10 26 gp
11 34 gp
12 45 gp
13 60 gp
14 80 gp
15 105 gp
16 140 gp
17 190 gp
18 250 gp
19 330 gp
20 440 gp