[novice]

I've been thinking about the following for eight hours non-stop.
An ex work colleagues distant relatives friends son is in a vegetative state after a horrific accident. The mother hears I collect records and offers me her son's collection of about 400 albums for $400 Aud. I go look. There are entire sets of Zeppelin, Floyd, Deep purple, Beatles, Presley etc. It's immediately obvious this kid knew his collectibles and his mother has no clue.
I know I could easily get $500 just for the Floyd section alone so the temptation is overwhelming and to be perfectly honest it's only the thought of being discovered that's prevented me from snapping them up already.
The parents do not need the money and I no longer have to work with the facilitator of the deal.
Any thoughts.