Yeah, but you are buying a fake product afterall - it says Omega on the front, cos it says ETA inside doesn't mean it's real!
Yeah - but a £4K M3 will be worth £3K next year, and scrap in 10 years. A decent watch will either never lose value or appreciate. If you look at the price of something mainstream like a Rolex Submariner - 10 years ago you could buy one new for about £3K. If you bought it then, kept it in reasonable condition you could probably sell it for £3.5-4K today. They go for between £4-5K via specialist dealers, which isn't that much less than the RRP...