Here are my audio deals:
Advent H500 towers, got them for $59 each, original cost was $299
Advent H200 bookshelfs, got them for $69 a pair, original cost: $199
Advent H100 bookshelfs, got them for $49 a pair, original cost: ~$199
Advent Heritage Center, got for $24, original cost: $149
Total cost for 7.0 setup above: $276.25
SVS PB10-NSD, got if for $399 b-stock (still looks new and they replaced the amplifier for free cause the auto/on switch was damaged in shipping).
Onkyo HT-S780, got it for $350 refurbished, sold the speakers for $159 so for for $190, I got a receiver at least as good as the Onkyo 503, with maybe more power.
So my total cost for this setup was $865.25 but had I paid full retail for it, I would have spent $1914 so I paid roughly 45% of original MSRP!!! A $2000 setup for under $900 aint bad in my book.
One more to add is the Panasonic AE900u which when I bought it, still listed for $2299 (bought it in Feb06) and I got it for $1995 - $400 mail in rebate and a $300 blockbuster rental card, so total cost including the rental card put me around $1295 or $1595 excluding the blockbuster card(though to be fair, most everyone got a deal similar to this and you can get it even cheaper now).
I also picked up the Logitech Z-5500 for $206 new in box Dec of 2005 which is still less than I can find it new.