I looked into this as I'm wanting to offer a microneedling treatment to my clients. I personally voted against it as it kind of encourages the client to DIY. Also, at home a client doesn't have control over the sterility and care of the needles and I worry they will end up cross contaminating and at worst getting a skin infection or other complication. Atleast with something like a derma pen device we know they are single use and that the blades haven't gone dull. Also, most clients that are DIY inclined will simply buy it at the next cheapest seller on Amazon IMO.