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I watched the PBusardo review of the Russian, it seems quite nice. There are other Kayfun clones, the quality and performance of which I cannot attest. Plenty of threads on the ECF about them though.
Personally, I would rather save $5-10 a month and wait to get the real thing if budget was an issue. I would honestly buy one next time I get paid, but, as dripping works just fine for me and I enjoy the ritual of it very much... all my vaping wants and needs are currently met.
You can also get them for $55.00 from Madvapes, but their stock is currently sold out, so check daily and perhaps you'll get lucky enough to score the genuine article for half the price.
Madvapes Kayfun Lite