Yeah, you really have to do your research before buying names. Particularly for these letter/number combination names, you need to know the market and know how/where you're going to sell them before you invest. I mean there are definitely a bunch of names with NLLL pattern that sell in the low $XXX range, but I have no idea what makes those names sellable while thousands of others remain unregistered.
Yours does have a possible meaning, but that doesn't mean anyone will want it. And if you don't have a line on any good end user possibilities, then it becomes just another NLLL name that you have to list and promote and hope someone will like it enough to spend a bit of money on it. Possible for sure, but who knows how long it'll take, or how much you'll make for your time?
Drop me a PM if you want someone to bounce ideas off of. I've only been at it 9 months so far, but I definitely have a lot of not-to-dos I can share.