Disposables and cheap is more or less an oxymoron. Disposable cost like ten times what rebuildables and DIY does long term. In amortized cost over Time a disposable's starts out cheaper but gets passed in a few weeks. So if you really want cheap vaping step one is stop looking for disposables. Pods are better. You can cut you amortized cost in half by using pods. So like $200/month instead of $400. (Yeah. They’re spendy) Not as bad as analogs. They would cost $450/mo for the same 1 pack/day habit. I estimated my cost at one point at $30/mo. With rebuildables and DIY. I don’t know where it is now. I no longer use nicotine so that lowers costs, but then there’s inflation. Hard to know. It’s less. A lot less. I know that much.
Disposable have an advantage in only two areas. One is convenience. People always want to sell you convenience and it’s frequently really expensive. The other is what I call after the Aerosmith song “smokin in the boy’s room”. Did you think I was gonna say safety? No. Emphatically not. I’ve heard that argument. After thinking about it there’s no possible way it couldn’t be crap except automatics only last as long as their vacuum sensor so they frequently die before a big mod is empty. If the vape dies before the “tank” is exhausted, the coil stays wet, and a lot of the bad stuff you hear about only happens at really really high temps. If there’s liquid there the coil CAN’T get to those temps. If it’s dry it can. Unless you have temp control. Even then it’s not a big deal. If you know what a dry or burned hit tastes like you rewick. You don't suck on it all day. Even if you did it wouldn't have any more contaminants than city air. Other bad stuff happens when things like styrene get burned or silica is used for wicks. Silica wicks stay clean longer so you can make bigger disposables (but not much longer. Disposables are generally a mass of goo on the inside after day 5. You just cant see it. And they're generally made of styrene. Its the cheapest plastic.
There’s also a lot of “well, it’s just empty”.
Maybe not.
What very possibly happened was Your device broke. It just *seems* like it’s empty. It might be. Or might not. There was a disposable called the escobar that had unusually bad protection for the air pathway and was as bad as an old style one. They don’t sell them any more.
Vacuum auto switches are wildly unreliable. The tiny aluminum bag that has to be open to the air but never get anything at all in it. Ever. Even a speck of dust.
The two sides of the bag HAVE to be able to make contact. Anything that keeps them from doing it (such as a tiny spec of juice or a dust particle) kills it dead. They’re better with disposables because they can make that opening circuitous, but they're not perfect.
Disposables are better with that than an auto pod, or an old auto ego battery, but pods generally have buttons. The ones that don’t have an auto switch you replace along with the pod. Which is different from the old ones.
There is a reason.
When e-cigarettes first came out, before “vape” was even a word ALL ecigs were autos. The first button ecigs were hand done mods by people who added a button because the auto switch was such crap. That’s why they’re called mods. Disposables are a bit better than those early ecigs because they don’t really even have a tank and are more like sealed markers. So the auto switch takes longer to die. It still dies though. It just takes longer on average, and you can’t open them, so you can’t mod them or even know it They’re even not empty. They still use vacuum switches which are still done more or less the same way.
They’re not AS bad, but they still suck.
If you want to be “Smokin the boys room” disposables are probably the way to go. If they’re confiscated it’s cheaper. Real rigs can be wildly expensive. Of course then I wouldn’t want to help you find them anyway.
A real rig can cost 2-3 times or more what a disposable does. If you vape a Boro 5 times or more. But since you don’t replace IT the continuing cost is actually much much lower. Even for a Boro.