With great sadness, I need to sell my entire collection, a 31 year accumulation from G1 right through to combiner wars stuff.

My question is, can anyone recommend or does anyone know a person or place that could come and value my collection so I can get a rough asking price? I'll likely get a price from tfsource.com once I've gotten around to writing a list of everything, but I'd like a more local opinion first. Where do I even look?

I'm in outer northern Brisbane. Thanks in advance.