Sourcing Second-Hand Test Instruments in Korea

Please note that below task is only available to local Koreans and long-term Korea residents. I need help tracking down reliable, fairly-priced, second-hand test and measurement instruments here in Korea... (Budget: $30 - $250 USD, Jobs: Business Analysis, Data Collection, Inventory Management, Market Research, Research, Sourcing, Supplier Sourcing, Supplier Verification)