Originally posted by Serkevan No, I mentioned the Ebay price because beholder said the Canon lens is worse and should be cheaper - if this were true, the price that people are willing to pay would be lower, not a 20% discount over the street price of a new lens sold by Amazon.
I shouldnt have mentioned Canon, especially with glass. As undisputed market leader they can charge a premium over what would be a fair price from the small players (Nikon, Sony, Pentax etc).
Generally the cheapo buyers will have to face the industry trend up market, which means even proactive shedding of ex-potential-buyers who were not willing to invest in new glass at full margins anyhow.
If (and that might be likely) Ricoh have found a way to develop and produce profitably very small batches we need to keep in mind Pentax are just a toy store for Ricoh overall. They might not even have the goal to compete 1:1 to the biggies.
So if anyone looks at his/her lens collection and >50% is from Sigma/Tamron directly he/she might even be "not welcome". Combine this with for example a situation where the camera all these non-Pentax lenses hang on is a K-5 generation.
That certainly is not completely unusual business practise.
Look at current RF/Z mounts: Canon and Nikon seem to have negative interest for 3rd party glass. Obviously the damage of 3rd party glass to margins is higher than the gained margins on some (older) extra bodies sold.