Chris Thatcher
Analyst · JMP Securities. Your line is now open.
So, we think it's about half that have taken advantage of the upgrade, Dave. And keep in mind too that, beginning in the second quarter of 2017, all the systems have the 19-minute treatment sessions. So each successive quarter as you get past that April of 2017, there'll be less upgrade revenue, right, because there are less folks taking advantage of it. So we have found that it's really good for customers that are trying to manage peak load, as you can imagine, a lot of folks would like to come in before work or start their day doing treatment or come in over lunch or in their day a little early. So there's -- it helps alleviate that. So those customers that are generally trying to manage that and it's more cost effective than buying a second system. So those are the folks that take advantage of the treatment session upgrade technology, right? And then, you mentioned, you were talking a little bit about treatments, I want to make sure I answer all your questions. Treatment session pricing, we've been pretty consistent, Chris, and I have, over the course of last few quarters have telling folks, we expect mid-single digits, 3% to 4%, 5% range of price breaks that we give customers. And then, reminding folks out there, this is not a discount we do to drive sales at the end of the quarter or just put promotions on these treatment sessions. These are predetermined, we negotiate with the customer and it's all part of this surrounding the customer and partnering with them, right. So we share in their success as the volume goes up. We give them price breaks. And as we've said, 3% to 5% and that's what volumes, Dave, growing in the kind of that 23% ,24% 25% range when you see volumes growing faster or system sales growing faster, then you could see getting above the 5% range, but we are comfortable guiding that that's where we'll be. 3% to 5% price breaks will take hold again in 2019 versus 2018. And we'll come back and tell you the good news, right. It's really good news, because we will trade a point or a few basis points of ASP on our product, that's growing 95% -- has 90% to 95% margins for us that's growing and people are taking advantage of the technology.