So, jumped on the bandwagon and picked some up. < $10 is my kinda entry price for an experiment.
Interesting Wallyworld experience (as mentioned above, not my normal go-to store): Last night, confirmed availability at my store - site said 3 in stock @ $5.99 (purchase online price was $20+ as someone else mentioned). My plan was to swing through on the way to work, they open at 6am. Check my phone again @ 5:45 before heading over, still 3 @ $5.99.
Get to the store, find the Auto section and spot the Seal-n-shine on the shelf - $6.97. :huh: Sure, it`s only a dollar, but I swear it just said $5.99 on my phone 20 minutes ago. Pull out my phone, check again: In store price on the website is $6.97. Very strange. Again, only a dollar, but so weird for it to change like that. Maybe they knew I was coming...

h34r:
Do we know if this stuff has any bad habits people are complaining about? Etching, hard to polish off, dust attraction, etc?
I`ll probably use this on my Coworker`s truck when I borrow it (I hate borrowing trucks; last time as a thank you I did a full interior detail for him). He keeps it pretty clean outside, but it`s always tunnel washes. Last time he put anything intentional on the paint was back when he got it (2015?), so I figure it`d be hard to do it any harm by trying this stuff on it.
Otherwise my plan is to try it on my wheels and see how it fares.