The Limeta R8 is the same device as the ISDT N8 which typically goes for around $85 delivered when on sale and $110 at RRP.
These are very similar to the popular ISDT C4 Evo but can charge 8 batteries rather than 4. The R8/N8 does NOT support 18650s though.
Recommendation is to check for the latest firmware (Uses the ISDT firmware app) as some of the older ones were apparently prone to overheating some batteries.
I don't know the background of the Limeta vs ISDT brand names, but I have confirmed with the seller that these are the same device and there are comments indicating that the shipped units are actually ISDT branded anyway.
That's a deal-breaker for me.
Looks like their R4 Evo does support 18650s
Still using a Nitecore D4 from years ago to charge my 18650s.