Those kickstands, landing gear, whatever they are called (I cannot seem to find what western calls them) seems they do not sell them complete they break them down into like 4-5 parts you need to buy, and YES like you mentioned they are pricey when you add up all the components. The shock seems expensive also, at least what I have been told, think they said 175.00 for a small shock, I thought WOW.The kickstands sometimes get mangled and they are fairly costly to replace. The shock absorber isn't as common of a piece to replace - either the plow was hammered on or its fairly old. The plow will operate with out it, it'll just bang more when/if it trips. But it isn't a very expensive piece so that implies the plow was both beat on and owned by someone who didn't want to fix anything on it.
I would also think along the thoughts you are thinking did someone beat this plow, not care, or was it used as some parts plow or something because odd those kickstands are gone, and the shock is gone. The rest of the plow does not look bad compared to other plows I have seen but still to start having to add in parts that should not be missing seems strange.