Sigh!
Another long OOP range that I meticulously hunted down over several years, now easily available at considerably less than what I paid for some of them.
There's probably a moral here somewhere .... 
Cheers!
Joe Thomlinson

You know I also hunted down considerable encounter groups of three types of these. The Lost Lands or "iguanids" as Mirliton calls them, the ones from the Horrors of the Marsh, add on pack and flamethrower are fairly common but the ones from the dedicated Lost Lands box set are hands down the rarest Grenadier figures I've personally hunted for. I had ebay staked out for FIVE YEARS before pouncing on the first chance I saw to own them. The lot was bigger than I would have liked, too, so now I have tons.
That said, these are not expensive as new figures go these days but are more than I paid for any of the lizardmen I got on ebay over the years, shipping included and even including the lost lands ones!
Anyway, great figures, all. By sheer coincidence I just took pics of my AD&D lizardmen to share recently and plan to post them here in a minute. The Lost Lands ones I plan to use as troglodytes. Not sure about the Dragon Lords ones. Maybe they'll be another tribe in an alternate color scheme, or maybe I'll just hold on them.
The frog men are only so-so, not Chernak's best, but I'm tempted by them all the same as 25mm bullywugs are few and far between and these are another fairly rare sight on ebay.
edit: posted by take on the AD&D lizardmen just now:
http://leadadventureforum.com/index.php?topic=32158.225