Yes, as a fire/EMS department, you can apply to take advantage of COSTARS pricing on equipment by going to
http://www.portal.state.pa.us/portal/server.pt/community/costars/1272. The pricing here is negotiated for state contract in for a lot of items the pricing isn't to bad. We recently ordered tables and chairs for the social hall from here. There are a lot of items available under the program, however make sure you read the bid information, like the truck you mention, you may have to go to Harrisburg or Philadelphia to get it as only one vendor in the state can provide that contract.