Well you would either need to find yourself the buyer of the regulator or you need to wait for someone to order a reg and I would add the bottle at the same time.
Price would be 120$ + shipping on a 50/4500
Their regulator sell for 34$ + shipping
Currently a dealer for: Ninja Paintball / Ansgear / PaintballGear.ca
Distributor for Canada/Usa: Flying Lynx Paintball Feedback