I've seen mention of this on the forums. I know people are using this as an economy brew stand. $153 shipped is a great price.
This has two burners one 60,000-BTU cast burner and 105,000-BTU jet burner.
This has a 4.5 star rating. Two of the three reviewers are using this for a brew stand.
King Kooker 94/90TKD Portable Dual-Burner Propane 30-Inch Patio Cart - $153 Shipped (Save 20%)
EDIT: via Homebrew Finds Reader Aaron... If you're a Sam's Club Member, this is available at samsclub.com for around $25 less. Tax and shipping apply so you'll want to compare total cost. Here. Thanks Aaron!
Related: Amazon, Amazon Free Ship Add-Ons, Propane Burners, Brew Stands, Great Deals