Hi been lurking a bit and finding this site to be a great resource.
Im in Ireland and have had a k1000 for years and after getting rather peeved at the scans the photo labs were making of my negatives recently acquired a k200d body and loving it.
currently using a 50mm A pentax lens and a tamron 80-210 manual which has a km mount
I've been looking at a lot of lenses recently (lens buying addiction) and this site has been very useful
one i recently found is a vitacon 100-300mm lens f5.6-6.7
I think its from Singapore from a company called Photo & Consumer Investments Pte ltd They have a website
www.photoconsumer.com/lenses
lenses are a range of zooms branded cosina / vitacon these are af lenses and some manual lenses branded koboron which are all types of macro lenses.
Rather telling is that the only mounts mentioned are canon eos nikon-af and minolta-af no mention of pentax at all so might be the lenses on ebay are nikon not pentax and have the dreaded pin.
Any way there is a chart to ponder at the companies web site, and hopefully for a first post this might be useful
for anyone thinking of buying one. Ebay seems to be good for finding lenses with claims to be one thing and turning out to be another.