Micah Toll has fairly good credibility. He has written some good articles on ebikes, sells a battery kit, etc, so if he likes this bike, I believe him. Disclaimer, I've never seen one.
Lots of places to buy it.
https://swagtron.com/product/swagtron-swagcycle-eb-5-lightweight-aluminum-folding-ebike/?attribute_pa_color=white&gclid=CjwKCAjw_MnmBRAoEiwAPRRWW18lro6MkRDfrSwXzHQ6O64Dqk3t8PxHftNkASh9Xicp Cnj62lhfUxoCZggQAvD_BwE
https://www.bestbuy.com/site/swagtron-swagcycle-eb-5-14-electric-bike-white/6307487.p?skuId=6307487&ref=212&loc=1&ref=212&loc=1&ds_rl=1266837&ds_rl=1266837&gclid=CjwKCAjw_MnmBR AoEiwAPRRWWyu7As3GZD9eAXXkaV-M_Nq-60xzQzJW-SLt92Xn_CNcux1NkCZuOhoCkKQQAvD_BwE&gclsrc=aw.ds
What I don't like about it is 14" wheels. They're going to ride hard on bad streets, so you could be standing on the pedals using your legs as shock absorbers. If so, I'd install some quality sturdy folding pedals that won't snap off. (Folders have fold-away pedals by the way) Not a big expense, maybe 25 dollars. It's only a single speed too.
A more featured ebike is the Swagtron EB7. Has a derailleur and 16" wheels.Still a bit small and at this price $699, there are folders with 20" wheels and front shocks.
https://swagtron.com/product/swagtro...xoC86YQAvD_BwE
The Ancheer 20" folder has been around for a while and is less money than the above,
Read the reviews carefully on the Ancheer,
https://www.amazon.com/ANCHEER-Foldi.../dp/B07Q4DL1DR
$100 cheaper on ebay.
https://www.ebay.com/itm/Ancheer-20-...A8TAh5bPdAHLFw
However, I don't own any of the above. I bought two folding Downtube bikes, and put motors on them. Motor/wheel was about $250-300. Batteries around $250, Overall, I spent more than buying a cheap one when I include the $300 cost of the bike..