Buying bags over coils kit for bkw e36-need advise

[ramirez]

Hi there
Some time ago i started searching for some air suspension for my e36 coupe and now i found one but i can figure out-the money what seller asking are normal or to much...
Bags are from firestone..everything else u can see in pictures)
For all that plug&play kit he wants 1000eur
Tnx for answer