I think it is too early to unvest in 4L.INFO unless it means some special for you. You may buy it at low cost but the renewal cost is too high compare with the value of LLLL.INFOs.
Personally I do have 30 -40 LLLL.INFOs, but all of them are telcodes for small or bif size cities in China. I don't have any 4L.info if it is not a telcode here.