Pre-ban purple 2c-e press

I bought a bunch of 10mg purple 2c-e pills from a popular Netherlands vendor before the ban.

Has anyone who bought them found a good dosage of them?

I tried 1.5 pills, so supposedly 15mg, and it didn’t feel very strong. Id like to try two (so 20mg) but am afraid of it being too strong given the dose response curve. Really annoying that they sold it as pills and not powder because I have no idea if the pills are actually doses as advertised nor if they are evenly distributed in the pill.