gekopaca
French photographer
Could you add some cost figures with each lens?
Difficult to say : the same lens might be a bargain - because you find it with an old 16mm camera in the legacy of your grandfather -
or it might be overrated by an ebay seller.
Some were very expensive few months ago (for example because they're very fast) and now the prices drop down because there's a native M43 lens in the same range.
So, if you're interested for one particular lens, it's better to see on Ebay its current price.