Chemical Guys - Bare Bones

Ive been a big fan of Chem Guys products for a long time now and they are often all I purchase. I expected a lot from this stuff at £9 for the small bottle, and can honestly say I wasn't impressed. I ended up using half the bottle on the first use, and my undercarriage didn't even look much cleaner, not only does that seem like a huge waste of money but I couldn't afford £4.50 every time I cleaned my car just for the undercarriage. The price might be acceptable if it did the job as well as others...