In this thread, we show before/after ads of flippers (by Googling the VIN)
Some commentary on the specific cars might also be instructive.
I have no beef with flippers as long as they are transparent.
If you find a $10 widget for $2, good for you. You made $8.
Bought for $18,500
Sell used 1984 Porsche 911 Carrera Targa 90k Well Maintained in Stowe, Vermont, United States, for US $18,500.00
Now selling for $30k
Porsche Carrera Targa