4xinnovations is not a new company at all, but they just recently sponsored this forum. The company must be getting bigger. I remember seeing his banners/setup at KOH last year and he hooked it up with a t-shirt. If i remember it was just a little garage company.
I have had my 4x sliders for a couple years now and have beat them up. They have held up great, Especially since they are hrew.
I doubt you will get Adam to do a group buy, his prices are already pretty low. I paid $170 for my sliders + shipping... thats about the cheapest i have heard of. I mean the guy has to make some money. Theres at least $50 in tubing in a set of sliders, More around $80 for DOM. and then you have frame plates and gussets. THen you have time, chop saw blades, a bender, welding wire/gas, shop space, grinding wheels, electricity, tube notcher.. ect.
I think they are a great price. I dont see how a discount, Say 10% or $16.50 off would make you all decide to purchase.