Yeah I've been keeping an eye on the sliders to pick a set up in the near future. They're basically the same price as they normally are even with the discount.
I just bought RCI sliders and Im pretty sure with the options I chose they were at least 150$ off what they were a couple months ago. Also their pinch weld covers were about 40% off.
They were great to work with, pro-actively fixed a messup I had in the order, and very responsive!
One of the better experiences I have had.
Also I asked them this question (coupon) and they said just the BF sale prices.