A lens with a speck of fungus

Hi guys,

I am in a quandary....

On fleabay there is a Tamron SP AF 90mm f2.8 Di that has "light fungus speckles" and its on for £90...

Is it worth the risk for £90?

Ask the seller to take a shot with the aperture wide open whilst a torch is shone through the lens from beneath. That'll show the fungus. Post the shot back here for comment.

I note there's another listed that hasn't yet reached £50.

I bought a K200mm lens with fungus, initially put it in the sun, pointing directly at the sun for two days, I was assured this would kill the fungus. Wasn't sure this would work so I watched a U Tube video, stripped and cleaned the Optics. All now good, a little fungus should not affect the images.
Good luck.

Thanks for the replies and advice...

I was really happy buying it... so I thought bugger it.. and bought a Sigma 105mm f/2.8 Lens EX Macro instead for £160!!