A major pain-in-the-butt loose end for me has been the last Gen1 UK annual (in 1991/92 - with the five Dinobots on the cover)... and after many searches and missed auctions, I finally won a copy.

I can't remember how much I bid, and I don't get emails from ebay anymore confirming bids (???), but it wouldn't have been much above what I won it for (I was desperate, but not that desperate to go more than 40 pounds). Unfortunately, UK Pounds can be rather deceptive, as the exchange rate to AU$ ends up making almost double the numeric value that I bid (in pounds). I may have won it for £38 (GBP), but that ended up being AU$66 plus postage (£7 - AU$13).
It was still at £8 when I placed the bid, hoping that since it hadn't attracted too much attention yet, it would stay cheap. But someone else really wanted it too... bidding £2 at a time, until finally giving up close to what I think I bid.

Now to track down the remaining seven issues of the original UK comic I'm missing... which usually sell for big bucks.