My Outback aircon was a tad feeble when I bought the motor.
After scaring myself with a main stealer's quote to service and regas I started to look into using a DIY regas kit.
Got one for £25 delivered complete with charging hose and pressure gauge :).
Followed the idiot proof instructions and now my Doris is complaining it blows too cold.
Took 20 minutes from start to finish and its still going strong two weeks later.
Got the kit from these peeps although their prices seem to have gone up during the hot weather.
I have no affiliation with them just saying it worked for me and saved a bundle of beer tokens as well.
oooops forgot to add the linky http://www.aircontopup.com/