Oil leaks

So mechanic is biting my head off about the cost of fixing to main leaks. Yet I confused if the rear main seal is the same as the crankshaft seal. Then he goes on to say upper oil pan leak too so he gave me a price of $1,129.00 to fix it. However, he called said my starter was cracked and wanted to replace it. I believe I had it under warranty and said I would call back later. I did and I got gripped out by his wife so come to find out the starter was already put in there. He goes on to tell me about all the extra work he had to do he had to pull out the motor he says in order to get to the lip seal in my mind I'm thinking to lypsyl. Is what is on the rear main seal for 1 number to why did he have to pull the motor and number three. Don't you have to remove the starter to get to the link between the motor and the transmission? I'm really confused with the whole process and feel it was a little over priced. Nevertheless I told him to go ahead that was in the beginning. Now I'm dealing with this not sure how I feel about the whole motor thing and as to why it was pulled. Saw your video now I feel as if they didn't know what they were doing.