got one of these from WES :
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Costs only $20.
Described by them as " 48W Variable Temperature Controlled".
Fraid it is not temperature controlled.
The iron is 48 watts all right, but it is also 240 volts - the base contains a simple triac dimmer.
It is quite slow to reach operating temp and adjusting the temperature is a matter of judgement - probably be OK for light soldering work and as a spare iron.
Tips are available in 4 sizes ( from 0.5 to 3mm) for $4.12 each and have some kind of white coating on them to prevent seizing in the barrel.
... Phil