Big Greg,
I use the professional and bodyshop line of Autoglym. The retail line (Super Resin Polish and Extra Gloss Protection) is not a great value. However, Radiant Wax Polish in the professional range is the same formula as Super Resin Polish and costs a lot less. 1 liter of Radiant Wax Polish costs around $15 while 325 mL of Super Resin Polish costs $11.
Another great product in the professional line is Liquid Hardwax. It is a sealant and works great when layered on top of Radiant Wax Polish. I also use the compounds in the bodyshop line, they are great. There are a whole bunch of other products I can comment on, just PM me and I'll answer any Autoglym questions you have.