Buying from ebay is like buying from a guy in the pub. You know nothing about them and often have little in the way of come-back if something goes awry. Sure, you get stuff for less than you can get it by buying from a real shop but that comes with an associated risk.

It amazes me that more people don't have problems on ebay - it's a den of thieves and footpads. The good guys are out there but it seems they're outnumbered. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed