fasttech is in China. Shipping is free, but be prepared to wait. Now, with Covid 19, be prepared to wait A LOT. I ordered some replacement glass on April 14. It's still sitting in China... at the Shanghai Airport, if tracking is to be believed.
The TPD editions of the Dead Rabbit RTA will only hold 2ml of liquid. However, that RTA will not do well with a single coil as it has 4 juice slots (2 per coil). You have to build a big coil, and split the wicks... tricky...
The original Zeus, the Engine Nano, the Solomon 2 or 3, CP TF, and Vapefly Horus are single coil, top air RTA that would work better than the Dead Rabbit (which is one of my favorite RTAs, BTW).
Also consider mesh RTAs. The Kylin M, Themis Mesh, and Zeus X Mesh are top air, and quite nice once you figure the wicking out...
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