Have I done good or bad

[TeamEmperor]

As some of you know I got the gf a fto a few days ago & have been rushing about trying to get it in tip top condition I want to put a list up of what i have bought & see if im doing good & if anyone can tell me how much i would have had to pay if i did it all through mitubishi stealers

OEM Airbox
Airfilter
5L silkolene pro s
oil filter
10L transmission fluid Tiptronic
coolant
sparkplugs front & back
manifold casket
cambelt centre idler
cambelt kit Alt power & cam belt
fto cambelt tensioner tool
water pump
I have to add £120 to this As im giving my friend a honda tech For doing the belts & rear sparks +waterpump All other stuff I did.

Total £516.78

Is that good?