'Saw' Star Betsy Russell -- You'd Cut Off Your Arm To Buy THIS Mobile Home

This might be the fanciest trailer park in the world ... "Saw" star Betsy Russell is trying to unload her Malibu mobile home for just under $2 MILLION. Yes, we said MOBILE home.

Betsy -- who played Jigsaw's hot ex-wife in all 372 "Saw" flicks -- listed the property with realtor / Bravo's "Million Dollar Listing" star Madison Hildebrand a few weeks ago for $1,999,999.

It's like no mobile home we've ever seen ... 2,400 square feet, 4 bathrooms, 3 bedrooms, marble counter tops, stainless steel appliances, outdoor fire pit and a patio overlooking the ocean.

Then there's the location ... the mobile home park is considered one of the most luxurious in CA -- 24/7 security, pool, spa, sauna, tennis courts ... and crazy views of the Malibu coastline. It's ridiculous.

Who knew?