Well as stated, if you don't have wires or circuit boards there's no electronics to go kaput. This makes maintaining an unregulated mod a bit easier, more affordable. You can buy replacement positive firing arms, grounded springs as kits at low cost. This is better than say needing to pay $50+ for a new circuit board, rewiring.
Last I checked I think for both a positive firing arm & ground spring you might pay $12 to $20 tops. There's ample videos showing how to replace these parts on YouTube. It may take you about 10 minutes to watch one through, maybe that long to repair your mod. With maintenance & care repairing isn't going to be done often.
Swappable batteries run anywhere from $9 to $12 per a set of two 18650s. Again, use some care with batteries. There's re-wrap kits you can buy if ever you need to re-wrap batteries. I'm estimating about $5 to $10 at most for enough materials to let you re-wrap a few times. I'm sure videos exist to show how to do that too.
Yes, I know that kind of adds to about $50. You're getting more though for less cost in the long run though. Not sure if the Kanger unregulated squonkers are built like tanks but know Reo clones seem to be. If that's indicative of Reos themselves then figure you need less repair work done over time. It's all bang on simple stuff too.
I've been using a pair of Reo Grand clones for about 3 weeks. I've used my Smok MProX22 regulated a little. Do I miss needing to adjust my settings? No, not one bit. I just depress the fire button and get vape going on. You learn to get a feel for when batteries are losing their charge. Usually, when your 6 ml juice bottle is going empty, time to swap batteries. The advantage? Well, you can dub it being lazy if you want but honestly, why do I need all the bells and whistles if I'm vaping to get nicotine, or to vape zero nic but stay off cigarettes?
