Interesting that no one picked up on Wayne's comment above. Sadly I think the bubble is far from burst at the moment. Someone buying B list games last year or in 2015 for £1200 is looking at £1800+ for the same titles this year. That's a pretty bloody good investment if that's the type of thing that floats your boat. DE prices have gone loopy. I suspect SEGA's will shoot up next.There's also the perception that buying pins is an "investment", because people have heard about the massive price rises in the last 10 years, they want some of the same, despite that bubble having burst.
I see games staying unsold at unrealistically high prices on ebay but no real evidence of prices falling. Even if you overpay for a game there is a massive incentive just to sit on it unless you need the cash and/or space and see if goes up over time. A further reduction in supply makes price rises a self fulfilling prophecy.
Maybe if there is a surge in the value of the pound and NIB prices tumble there will be a corresponding fall in the 2nd hand market.
I'm really surprised that the eye watering prices don't put more people off getting involved. I remember first looking at games when an IJ etc would be £750 and thinking "how do people justify that?". Little did I know...