i found the standard griffin 25 on sale at gearbest for $9.99 shipped. i'm loving it! as no directions were included i quickly destroyed the single coil adapter trying to remove it. after a few youtube vids i understand the wicking etc. and this thing just rocks with a single 3.5 mm 8 1/2 turn coil of 24 g ti. i'm happy a spare single coil adapter was included. i've had absolutely no leaks or seepage and i ordered another today. it's on sale for another week. i have it sitting on top of a cuboid i got on ebay for $20. Score! the griffin was shipped from the usa and i had it in 5 days btw