Fungus in Lenses

Good morning
http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&rd=1&item=290144184870&ssPageName=STRK:MEWA:IT&ih=019
Would these lenses be worth bidding on if the price was right (they all have fungus) I assume its not an easy task cleaning these or he would have cleaned them himself. I have never dismantled a lens before but if its not too difficult i would be willing to give it a try and re-sell them. Thx

Of all the lens that I have dismantled the M series are probably the easiest, as there are fewer small springs to lose.
Fungus is not that hard to remove, but it is my understanding that it will have most likely 'eaten' away at the coatings.
From the EBay picture it looks like the 1:1.4 to pretty badly affected.

Just out of interest, how common is fungus inside lenses?

I've never seen it, touch wood..

I have never seen it either. Living in Aust it would be less prevelent i would think.

I believe that older generation lenses are more susceptible. I have seen several cases on Pentax M and A series lens.
The coatings may have been changed to make them less 'tastey' on later series.

I've seen it in a 40 year old Takumar and is a second had lens in a shop.

Common if you don't treat your equipment right or if it has not been used in a very long time.