All of our CBD-infused oils are made the same way, but the plant varies and that sometimes makes the potency vary. Even though we are out of stock on 2 ounce 500 mg CBD-infused oil, we do have 400 milligram bottles of the same — that have been appropriately discounted. If you go to re-order your CBD-infused oil and find it ‘out of stock’, please just shop a bit because you will find the 400 mg bottles at a reduced price. It is all the same process and ingredients. Potency variances require that we list them as separate products.