one way of assessing the value of an items is to look it up on a galaxy wide vendor search, as a general rule of thumb though, at least 95 percent of looted gear is only fit to be sold to a junk vendor, junk vendors also give you the 'schematics' for the glass table etc, i dont know how many parts there are, but it does tend to be that certain parts are quite common, but usually at least 1 will be rare.