BlackOps, Yes it's bigger than mine. Looks like a late 05' or 06' trailer. It looks like the model 242. Probably 25 ft. in length and about 3600 lbs. Hence the reason it's probably more expensive.
Go to
WWW.KEYSTONERV.COM for the website. Click on Zeppelin and go to specifications. At the bottom you'll see 2004,2005,2006. You can click on that to see the other years. They never labeled my 181 in the 05' year just 04'. But they did make the 181 in early 05' and changed the bathroom vanity set-up.
Pulling something at 25' is the maximum length for the jeep. Bit too much for my taste which is why I chose the 181 @ 19' long. Mine tipped the scale @ 3,020 lbs w/ full propane ( 2-30 lb. bottles holding 15 gallons total ). I never carry water in the fresh or blk. and gray holding tanks. Which are pretty large 45/35/35 gallons. Throw in my trailer gear @ 200lbs. and 2 in the jeep w/ personals for another 400 lbs. The jeeps got 3600-3700 lbs. to tow.
If you start getting into a bigger trailer like that your weight will easily exceed the 4000 zone and more. Me personally I don't like to tow anything that's heavier than the tow vehicle. But I'm anal enough to always think safety first. Which if you search these threads is the reason I put the dodge ram towing mirrors on the jeep... ya gotta see that big thing behind you. PM me with your website, I'll send you pics of my trailer if your interested. There was one on ebay and I'm sure if you do a google search you'll find them too. Just not many left. Although that Fun Trailer looks kool too. Joe