Bose equipment tends to fill certain niche applications quite well. And Bose is actually pretty good about providing data on their Pro website. The L1, for example, is a portable column loudspeaker (2 of the Bose MA12 actually) with a companion bass module. If you need a low output, speech range line array, it's not a bad choice.
However, looking at the
datasheet , you could get comparable output from something like the EV ZX1 plus a small sub. Even if you double up on the ZX1 (for coverage or output), add a sub or 2, and add amplification and system processing, you're probably well under the price of the Bose product.
Ultimately, it's your money, but for a general-purpose system, you'll likely get more bang for your buck elsewhere.