Thank you for your question.
As you are aware, there are many brands of fillers in the market, and I agree it is often difficult to make a choice. Fillers vary in terms of longevity, so the main difference is whether it’s a permanent or non permanent filler.
For lip fillers, it’s best to use one that is made of pure hyaluronic acid ( non permanent) as that would give you most natural result.
Prices vary depending on the clinic and choice of filler. Ultimately, my advice would be to arrange for a consultation, share your concerns and expectations, and choose a doctor you are most comfortable with.
Hope this helps.
