It's very easy to extract the hormones (whatever it is - test, tren, or estradiol [estrogen]). What's a REAL PAIN IN THE ASS is extracting the estradiol from this mix. And the kits that are used to do this extraction cost more. Even if you want to chance a home-made extraction method, all the extra stuff you need will cost more. This process is a couple days process as well.
Unless you have nothing but time on your hands, don't mind getting frustrated, why dont you just but the pellets without the estradiol. If someone were to GIVE ME (free) pellets with estradiol, I would rather pay for pellets without estradiol - IT AIN'T WORTH THE HASSLE!