Yes, but also very educational. Nowadays I would go for a NerdMiner or BitAxe if you want to learn, this price point is very steep for the educational value. Nontheless, they're solidly built devices. I have an Apollo I and used it as a room heater until energy prices really made it not worth it anymore. Before that they were break-even for me.

These are more efficient, and should run break-even at around $0.10/kWh at current price/difficulty (before halving, 0.05 after). Don't expect them to pay for themselves, unless you have free energy. S9s are a lot cheaper, but also less efficient, so you need even freeer energy with those.