Welcome.
This is the place to ask the questions.

I have an ebay bought battery for my k10 and I don't notice any difference in the capacity or use from the Pentax one. I think it was around £7 as opposed to £50!
I don't see why the K7 replacements should be any different.

To be quite honest, when you think that Pentax are asking for 9% of the price of a k7 body for a battery to fit it, you start think in terms of rip off! I think the K10 battery was originally for a Minolta camera anyway, so it's not even their design.

Even SRS offer a cheaper alternative to the hugely inflated price of the Pentax branded item.

DA* 300 has now been collected, by me! Thanks Danny.

Bit of a long way to run! (Canada from Wiltshire) Do you think the wife will be that angry?

PM sent re. DA* 300mm.

Nice one!

PM sent this afternoon, re payment and details.

PM sent.

By the way I've had mine about 18 months and it came from PC world/Currys on a previous offer.

I know what you mean about it feeling a bit strange, especially the focus ring continuing to move after the end stops. When I got mine I thought it was broken but after being reassured by the chaps here that it was supposed to be like that I got on and used it.

That's the best thing to do is get out and use it, you won't want to get rid of it then!

Must be one of my most used lenses and would probably be one of the last to go, if I had to sell up my kit.