As a rule of thumb 4 letter ( all different) domains containing vowels goes for $ 150 to $ 250 but if there is a meaning in it then the price can rise depending on domain niche. e.g : I have 4 letter domain in auction and niche is health and fitness. So i have shown how it can be used.
Now it totally depends on you what's niche of your domain depending upon its acronym
With the possible keywords that I prefer, I think there is a possibility to sell this domain to end users in that branche like underwater engineering. Low xxx is not the price for a sell. Imo