Well I can only consider for offers I ve received for my only lll.tv which was $2000.
That domain was pronouncable, with traffic and is a real word in many languages.
So I assume low mid $$$$ for pronouncable lll.tv's and below $$$ for others without considering the traffic factor.
if you mean at what level are domainers buying these i think the short answer is they arnt. valueless to domainers. if you owned a few maybe an end user would pay xxxx. good luck.
those lll.tv's are valuable now that endusers wanted to buy but passed on them because of exorbitant $4500/year fees. if you identify them , $xxxx is possible. all is IMHO