Didn't see that last part until now...
You mean like buying some flavorings from certain flavoring places?
Yeah, you'll need a little extra equipment, like some pipettes & syringes in various sizes & stuff.. but could definitely get by on the cheap with that
I almost went down that route.. was lurking at the DIY sub-forum, checking out different flavoring & lab equipment web-sites, etc... different places have different levels of quality & stuff when it comes to flavorings (just like juice brands), so you have to do your research & then try out different brands (again, like you do for already-made juice brands)
Plus all the different recipes, trial & error, experimentation, blah blah blah.. Was sounding more & more like a giant pain, LOL
Decided just to do the lazy-man's way of mixing.. was sort of forced to right off the bat when I started vaping 18mg & soon realized it was too much.. Started cutting for nic levels, then started blending different pre-mixed juices for new flavors, etc.
I like this way better.. Probably a little more expensive over time than true DIY, but a lot less time-consuming & less hassle, with probably better results...
Oh, and you might potentially end up with a lot of useless stuff.. flavorings you don't like, way too much nic base, etc.
I remember reading how somebody bought like a liter of 100mg nic base.. only ended up using a tiny bit, before dropping to zero-nic... Still sitting in her fridge, the nic slowly degrading...
Or maybe I should just buy more juice 
