That purchase is an excellent example of a great bargain!

It can be a verb, a noun, or, informally, an adjective.

You can bargain with someone, (verb), you can be given a bargain on a purchase (noun), or you can purchase a bargain item (adjective).

The use of "bargain" as an adjective is not considered technically correct, but it is still occasionally used in informal contexts.

A bargain is an advantageous purchase, especially one acquired at less than the usual cost.

There are a number of places where someone could purchase a 12V car heater. These include Advance Auto Parts and Amazon. A good option is also eBay as one may find a bargain there.

You can buy them in the store or online. if you are having a lot of people attend your shower your most inexpensive option would be to purchase your invitations through an online website.