I would check out Craigslist for a used utility truck. They also have a lot of auctions with trucks that have been repossessed or are selling from estates that you can look for.
The website www.mascus.com/Transportation/Used-Crane-trucks, is good for finding info on used crane trucks. You can find good information at: www.business.com/directory/.../cranes/hydraulic/ as well. You can find listings for used crane trucks at truckpaper.com and rockanddirt.com. There are hundreds to choose from at all different prices.
There are many places to buy good used trucks. You can go to sites like eBay where you can find many different used trucks. You can also go to a live auction in the country where you can find great bargains. On the internet there are many different sites depending on the industry.
Boom trucks can be found for sale in a number of places. Some good companies to consider include Commercial Truck Trader, Custom Truck and Equipment, and Mynatt Truck.
There are lots of places to find good deals on Chevy Trucks. You can check local car lots, newspapers ads, auto trader magazines and websites and asking friends and family if they know someone that has one for sale.
There are several places you can search for a used truck. Autotrader.com and cars.com are two places on the internet. You can also look in the classified section of a newspaper and at your local auto dealers.
There are several websites that can help you get a good deal on a used service truck. You can try http://vehicles.oodle.com/used-vehicles/for-sale/service-utility-trucks/ or http://www.commercialtrucktrader.com/.
To find a used mobile food truck, check out places like Kijiji,Craigslist,local classified and sometimes you can even find a good truck at an auto yard.
You can find used trucks in Colorado at www.autonetclassifieds.com/colorado. Another good site is www.medvedhummernorth.com
You can find good used trucks in Northern Colorado at Dellenbach Motors Used Cars Trucks & SUV's. It is located at 3103 South College Avenue, fort collins, CO 80525.
If you look online through Google, you will find that Carmax and Ebay have good listings of cheap trucks for sale.
Autotrader.com, motortrend.com, and edmunds.com (for price info only) are good places to start.
AutoTrader has a pretty good reputation, so it should be a fine place to search for used trucks.