Hi,
The prices of LLLL.com names just go on rising
ANXT is a good one IMO. Yes, it contains an X but it starts with A, it contains three premium letters and is aged which should help with SERPS. Additionally, I can pronounce it as angst (dictionary word meaning anxiety). 17,700 Google returns provide possible development ideas.
I wouldn't let this name go for anything less than $2xx. In fact, I wouldn't plan on selling this name anytime soon.
My opinions only, based on some recent sales and my interpretation of the name. Hope they helped. Best of success with it.
Edit: Another possible idea for the name. ANXT could be used as an abbreviation for ANtioXidanT.
Matt.