I’m taking Letro alone, but my purpose wasn’t to get huge. It did cut my estrogen in half, and double my testosterone. but my E was high, and is now in the middle of the normal range. So if your E isn’t already high, I don’t see how it could do much good, and may cause problems.
And no ‘significant’ training benefit, just weird full ‘pumps’, even though I rarely do more than 6 reps. Maybe I was expecting too much from a T level in the upper end of the normal range as opposed to the lower.
As for price, it works out to $1 a day at the dosage I’m taking.