Worked adequately for around a year, although the shade would never attached to the main stand properly.  

However, after a year (so well past the 30-day return mark), the lamp began tripping the circuit it was on.  All the lights and appliances went out, the circuit breaker had to be reset... and then repeat, the next attempt at turning the lamp on.  No obvious way to disassemble to find the cause of the short.

Takeaway - value UL listing, and safety, more than price.