Filter and 10 quarts quarts of oil & labour Ive seen my invoices go from $150 to $240.
Typically labour is around $100 so really most of mine are early/mid $200's
Doing it yourself its $170 in parts (bought from dealer earlier this year)
Prices for the parts can vary a bit from dealer.
Is your receipt just for the parts and labour ?
Taking of the belly pans is a pita….434 dollars in my opinion is reasonable considering todays shop rates. Ferrari will charge you 1,300 dollars for a similar oil/filter change.Doing it myself is also not an option. I checked out the nearest Ford dealership and they had no one trained on the Ford GT so I use a place that does other high-end cars and pay about $240. Good luck!