I ordered two of these from Amazon, and with Prime free shipping, they were $28, total. I intended to gut them and use the boxes to hold some horn tweeters, as these were cheaper than buying either blank cabinets, or the boards, fasteners, and carpet needed to make my own cabinets.When I got them, I noticed that they were rated at the same sensitivity (97 dB) as my horns, and on a whim, I hooked them up in my system, crossed over at 6 KHz. I was surprised to find that the sound from them is pretty good, airy and clean, but just a tad harsh when driven hard. I'll probably replace the cheapie piezo drivers with the horns one of these days, but I'm not in a big rush to do so.I can't comment on the durability of the boxes, since I don't move them around. For under $30 for the pair, I presume that the boxes are made out of particle board and wouldn't expect them to hold up under a lot of abuse.