This post is more Amazon-related than smoke- or car-related.
One of the things I've noticed about Amazon is that they usually lie, afaic, when they list Frequently Bought Together.
Much of the time, they are showing two versions of something no one wants more than one of. They're related becaue they do the same thing but not because people buy them together.
Tonight for the first time, I found an example where I'm sure many do buy them together.
I watched how to build your own smoke mach These items are shipped from and sold by different sellers. Show details Buy the selected items together
1) This item:Canplas 193632 PVC DWV Closet Flange with Cap, 4-Inch x 3-Inch, White $13.70 2) Canplas 193704AS PVC DWV FTG Cleanout Adapter with PL $15.73 (There's another one by the same company for $3 less.) 3) SPARKING 5FT 12V Female Car Cigarette Lighter Socket Extension Cord with Battery Alligator Clips Car? $9.74I don't know much about plumbing. Maybe 1 and 2 are often bought together.
But I see no reason to buy item 3 with these plumbing parts, except that these three things were the basic parts of his smoke machine. He has
282,000 views of that video, and I suppose if even 1% went to amazon** and bought these three parts, it would be enough to register as frequently bought togetherAnd when I wento the page for item 2,
Torch wicks, Johnson's baby oil, the sparking set, a crimping tool, a
10-pack of rubber stoppers, two kinds of resistance wire, air hose fittings, and a step drill bit. All 8 of them things he used in his video. Plus it had 2 assembled, retail smoke machines.No doubt that this guy is driving a bunch of Amazon purchases.
**as he encourages people to do, in part because he gets a commission. In fact I think one video maker said that even if you didn't buy the parts on his list, if youy went to amazon from his video and then bought anything, he got a commission. What percent do you suppose the commission is?BTW, I have part 3 and some other parts, and might even have something that can serve as part 1 or 2.