Quite a crazy thread on a number of points.
Firstly minimum value on LLL.com are falling through the floor as they were in a bubble and a domainers collector item, of course some LLL.co.uk fall into the same bracket. I'm seeing bad but not the worst LLL.com go for $3.5k mark, roughly half of what they were going for a number of months ago. Thats on a public auction too, lots of eyeballs.
Secondly, not all LLL are equal. Some will literally 'Fly'

, others will sink.
I mean who wants xzq? there may be a buyer somewhere on earth but in the .co.uk variant its highly doubtful, at least with the .com there may be an asian buyer or company in China etc that fits their acronym.
How can you artificially inflate? People will sell when they need to sell and people can only buy when they have the cash. Enduser sales will always happen and with more popular combinations you obviously stand a better chance, but with udrp and wipo cases on the rise, it's another blow to LLL imo.
Personally i think they are nice things but again when people are picking them up for regfee when they drop or lowballing people and getting lucky, everyone will have different profit margins , so for many selling one for £500 for a quick sale can make a lot of sense, also as stated if you can hold then great as this is the best policy for your best domains, but if we're talking minimum reseller values then you're dreaming if you think they're not falling. Ideally people don't have to sell, but it's no secret these are tough times, so if possible you should hang on and sell for 'your price'.
Trying to 'price fix' is dumb as prices will find their natural level.
If you price them too high they simply wont sell, and domainers (which is 95% of domain sales i would guess) will invest in other areas. Let's face it, there are enough areas and niches.