What is worth care when buying
Two things. Bacteriostatic water is a manufactured sterile product, and the label should name the manufacturer and a lot number. Syringes are sold in several scales, and buying the wrong scale is the single most common way people end up confused about their own arithmetic — check what the barrel is marked in before you buy, not after.
Everything else on the list is ordinary equipment. A sharps container is a sharps container.
Where to get them
PepRack keeps a supply list with a specific product named for each item above. Those are paid links: if you buy through them this site earns a commission, at no difference to what you pay. They are supplies only — PepRack links to no compound seller, and earns nothing on any compound. Nothing on that list is a recommendation that you should be injecting anything.