Is there a plugin that would be easy to create that would let the player buy a deed then use it on a worldguard plot or on any other plot system that would allow the player to claim the plot of land? would this be possible/easy?
Yes there are quite a few if you just search for "Plot" on bukkit... Heres a link of what you want https://dev.bukkit.org/projects/plot-claim?gameCategorySlug=bukkit-plugins&projectID=71975
