Guess I sorta don't understand. It's akin to buying a mazariti, and then going to walwart to equip it with cheap tires. Quality is the sum of the parts, but at the same limited be the weakest one. In this case the one you are trying to get on the cheap is probably the most important in the overall system.
I've got a tool box with 2 drawers of cheap stuff I'll never use (attys and cartos) and 1/2 a drawer of stuff I keep stocked.
IMO (obviously) you get what you pay for. Additionally I would never bulk
buy something without trying it first, even on trusted recommendations.
Again, just opinion. (One of an ikenvape fan)
-Z