I just looked at the shop briefly and it looked like a good one, not big and commercial, more handmade and personal.
You can make most things work for you if you want. I relied on commercial oils, kits, things other people made when I was so out of energy for a long time. Now, I have to make my own stuff, because of money matters. Both styles work fine.
Be organic as possible, and that works the best in either case.
I suggest reading over as many magick "potions" as possible, and find one easy to make, make in fairly large batches, and is all purpose.
I bought a giant bottle of blessed citrenella oil for $40.00, but I wouldn't suggest that. I'm keeping it for the day I need a huge cleaning fast.
I've been going to a candle shop in Greek Town, Chicago for 30 years and just wondering around and getting a feeling for what I might need. Of course they put all the "good stuff" behind the counter. But everyone is friendly, knows my name, will answer any questions I have, and have bought jewelry off of me for a wholesale price.
They always suggest burning a huge beeswax candle for hard times.