Private diagnosis

Hello

I am a 31 year old female and I have suspected for a while that I may be autistic. 

Ive decided to try and pursue a diagnosis this year for various reasons however I’m finding it difficult to get an “average” price for private assessment. 

Currently the lowest quote I have is £2k, has anyone had experience of paying privately and would be able to give me an idea of the costs involved? 

Thanks in advance