You can locate a cheap collapsible cart at a local hardware store, such as Orchard Supply Hardware Store, Ace Hardware, Lowe's or Home Depot for instance.
If you are asking for my opinion, yes. I would use a collapsible cart so it will be easier to carry back when it is empty. However, a normal cart would do fine for the job.
The types of material most commonly used for a collapsible cart is polyester non-woven, cotton and aluminum. You can purchase these carts online from retailers such as Amazon and Alibaba.
There seems to be a lot those type of carts for a person to use. Grundorf Road-Runner Collapsible Cart 300 lb. load capacity is one example of such a cart. I think it folds up for you when you use it.
Winsome makes a folding food service cart,but it cost 150$ and it seems as though you could find a less expensive option.
There are a few cheap and easy shopping cart tools to setup for online shopping. These include: Magento, Oscommerce, Zen Cart, PayPal Shopping Cart, Google Checkout.
The average price of a golf cart is between $4000 and$7000. The search for a Harley Davidson golf cart came up empty and one can only assume that they are very hard to come by. That would make the average price higher than what is stated above if you can find one.
One can purchase a cheap printer cart from a number of stores. Such stores are Wayfair, Paperstone, Viking, Brother, Overstock, Argos and Euro Office.
25-30 grand?
Here's one place that sells them, including entry-level models: http://www.cmssystem.com
quite a few houses collapsed badly due the earhquake
Check out home hardware stores for collapsible ladders. Stores such as Lowe's, Home Depot and Canadian Tire should carry them. Also look on the Amazon site.
The root word for collapsible is "collapse."