Quoted from AUKraut:Cost breakdown for making 3 sets of these including shipping:
5M of Daylight White LEDs: $13 Amazon
18 ft each of 5/8' 90Deg Molding & 135deg Molding: $50 Outwater Plastics
Diffuser: $32 Solid Apollo
12V Pigtail Connectors: $10 Amazon
Magnetic Tape (100 ft): $32 Amazon
3M Double sided Tape: $22 Amazon
22 AWG Zip Cord (50 ft): $8 Amazon
12V Power Supply (4 pack): $22 Amazon
Gorilla Glue: $5
Total for 3 sets: $194
Price per set: $65
Great info!! Thank you for sharing