Some tips that help in finding cheap aftermarket parts include using auction or classified websites. Auction websites, such as eBay, are generally used to sell car parts at cheaper prices. Classifieds are especially useful in finding used items at discounted prices.
While searching for the gauges, include the type of vehicle they fit in, along with its price range. eBay's search engine uses specific keywords to organize its search results. Also include desired price range for the gauges, which should narrow down the search a lot more.
Classified ads, such as Craigslist, are commonly used to find used car parts. However, using a classified websites are riskier, as the items may not be as readily available as the online auctions.