Indeed Andy. I recently, with others, had to dispose of a late friend's modelling 'estate' and it was a long drawn out and intensive affair but we ultimately got a satisfactory sum for his family.
Some years ago, I disposed of a vast collection for a relative of a family friend via Ebay (a lot of work!) and realized over £4000 (including mint boxed highly collectable Wrenn) when a couple of dealers quoted around £800 for the lot. That's the way of it.