and Yes, you are right, diffirent quality, which means a lot of information about, include bigger price etc... I don't explain it , hope in future we could be partner...and to support your business...
All the best..
Best regards,
Mr. Chu, Billy
General Manager
from his email:
Hi how are you? thanks for your quote, but price is now extremely high we are currently buying at $0.75 for 12v1a power supply.
You are very nice guy.