I would report it to Pentax management and hopefully their reaction is different.
Most likely they have outsourced their help desk and this looks like somebody did a poor job.

But I also agree that an upgrade model that requires a cd in 2018 is obsolete, there are no excuses for that

That is not the case with Macs afaik, they should be in pairs, but they can be different pairs. That is what I have atm

And another vote for ordering your iMac with the min memory from Apple and then adding memory on your own, it is really very easy and a fraction of the cost. the iMac 27 has four slots, of which 2 occupied. You can place another two memory modules in the free slots.
Just remember to add 2 modules, AFAIK Mac memory goes in pairs for performance reasons. So you can buy 2X4GB or 2x8GB or 2x16GB

This all assumes it's a 27" model

I would definitely go for an SSD drive rather than the standard 1TB fusion drive. The 1TB fusion drive only has 28GB SSD as paulcliff noted, that is very little to help improve performance.

I would go with the largest SSD drive I can afford and then as prices of external SSD drives are decreasing very quickly invest in a larger external SSD drive at some point.

IMO the internal SSD drive is both important from a performance point of view and to ensure longevity of your iMac.

I have a 2011 iMac and it was becoming slow, so last year I invested in an internal SSD drive and it was a change from night to day.

Malcom, any chance you can sell me one or two of these?

Hi Mats,
Sent you a PM... interested

On Wikipedia:

https://en.wikipedia.org/wiki/Chinon_Industries

Although I think Vic knows more about them than whoever wrote the Wikipedia piece...

It certainly was available in Italy in the 80's (and we did not have Dixons :wink
It was one of the cheaper alternatives to Pentax, I chose a Cosina instead...

PM sent about SP F and others

fully agree.

And in any case how can you justify taking 2 months to fix it....

Bump
still looking...