Can you create alerts for used gear you are interested in on Audiogon?

Hi I would like to learn some tips and tricks on how to buy and find used gear in the US and Europe

I live in Denmark and would like to buy a used pair of Spatial Audio X3. I have created a advertising alert on hifishark. What other sites do I need to know of?
Can you create alerts for used gear you are interested in on Audiogon?
In Denmark we only have dba.dk that was bought buy ebay some years back.