There's a pretty cool retail price configuration tool at this Malibu Dealer's site,
http://www.smoothwatersports.com/quoteaboat/boatstore.cfm.
Too bad Malibu doesn't have one on their main site, like Skier's Choice does. Getting a "sticker price" from my local Malibu dealer in Austin made me believe it didn't even exist anyplace but over the rainbow. (they were nebulous as hell)
Malibu doesn't ship trailers with their boats, so your local dealer will get his trailers from another supplier. You'll have to find out what they cost from him, since trailer prices vary.