David Spade -- I Finally Found Someone to Buy My Mansion!!!

It took SIX years and a $6-million-discount ... but David Spade finally managed to unload his Malibu mansion ... for practically no profit at all.

Spade bought the beachfront pad waaaay back in 2005 for $9.3 million. Two years later he tried to hawk it for $16.5 million, but there were no takers (wonder why?) ... and he took it off the market.

Not to be defeated, Spade tried again in 2011, listing it for $13.5 million. But still no cigar -- until now, as reported by Trulia.

Spade sold the place for the low, low price of $10,225,000. Leaving him with a much smaller profit than he expected ... a cool $925,000. Small in rich people terms.

But the real winner is the buyer, as Spade reportedly made a ton of upgrades over the years.