And unless those 18mm motors are a LOT closer in price to an Estes 3-pak, they will ONLY sell to a niche market via online sales. LHS, Hobby Lobby, and Michaels won't dedicate shelf space unless they turnover at a decent rate. That's why Hobby Lobby and Michaels dumped Quest and Aerotech many years ago.
DUMBBBBBBBB MOVE.

And to the fecal-minded that suggests I should 'chill', I once had a trainee/rookie/newbie/probie engineer under me for training/supervision fresh out of college that was foolish enough to tell me to 'chill out' when I was pointing out proper change procedures that could NOT be violated. That SEALED his fate. I left him to sink in his all-encompassing knowledge and washed him out. I am the LAST person to piss off in the workplace if you ever need anything from me.

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When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't !
Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, and HAVOC !