If you added everything up individually, you'd probably be surprised as to how much it all comes to.
I'm sat here now in my sitting room .... a quick glance around:
Rough estimates, to replace item with new:
TV £500
Hi-Fi £1000
CD collection (approx 400 CD's) £3000
Sofa and chair £1500
Carpet £500
TV cabinet, 2 x CD cabinets, DVD cabinet, Hi-Fi cabinet £500
Wall unit £500
Misc electrical items £500
Pictures, ornaments and misc bric a brac £500
Curtains and blinds £500
There's prob over £10k just in my living room .... yet it certainly doesn't feel like it lol :P