Could anyone help with giving me some ideas of what the minor and major services should costs on an IS250 petrol auto

Due to a broken chain on the property game, I'm stuck with a longer journey for some time, so I'll need 2 service this year, a 10 and a 20.

I had a chat with my local dealer about a possible service plan, but the costs seemed very high. I only had a 10k with 56 plate and I think I paid about £180 for that.