It has come the time for the ATF and filters to be done, what cost would be reasonable, I have been quoted £137 for this seems good, but what do I know
Do a search on here there are a few pots ref this subject, iirc if thats a full fluid change thats on ok price, but if its just drain the sump and refill which only replaces 2.5/3 litres of atf thats pretty dear.