Hi Bob, this may help you make your mind up if £300 for Life shine is worth it....
4 x Boxes of New LifeShine PDI KIT Auto Glym Sets | eBay
I suppose it does depend on how much you like cleanming and polishing your car but personally I not pay for lifeshine and just do it myself..........£29 for my latest lifeshine kit offf of ebay and then 3 - 4 hours of spit and polish.........pics in pic thread of the end results and if beading when its wet is any measure of the level of wax protection I had beads the size of 20p pieces this morning