When you buy a used lawnmower deck, you can pay much less for a deck that still has a very long life ahead of it. Buying just the deck allows you to continue to use your existing motor to power your motor rather than investing in a completely new motor.
The cost of a good lawnmower can be quite high, so it is important to extend the working life of the machine anyway you can without sacrificing performance. Used lawn mower decks can be found on Craigslist.org, eBay.com and local classified ads. Name brand equipment dealers may have used decks for sale. Some makes and models may have deck rebuild kits that can help extend the life of a new or used mowing deck.
An ad on Craigslist stating what type of deck you are looking for can lead to results. Sometimes used mower decks have little wear and tear on them because they came from machines that were scrapped due to other issues. If you are handy with tools you can take put a malfunctioning mower deck and replace it with a used one. This can save even more money because shop fees can be high. The more complex the mowing deck, the harder it can be to install.