To find out how much it costs Suresh to make all 100 pieces of costume jewelry, you can multiply the cost of making one piece by the total number of pieces.
The cost to make one piece is $1.55, and he makes 100 pieces.
Calculating the total cost: \[ \text{Total Cost} = \text{Cost per piece} \times \text{Number of pieces} = 1.55 \times 100 = 155.00 \]
Thus, the total cost for making all 100 pieces is $155.00.