thank you all for your comments. I have since pulled out of the purchase.
It turned out that the conveyancers have not been reflecting the Vendors' attitudes and desires correctly in their correspondence with me (Purchaser). Their conveyancers were almost taking a "take it or leave it" mentality. My own conveyancers were asking about termination every 3rd or 4th email enquiry.
Is this how conveyancers operate?
https://www.firsttitle.com.au/products/title-insurance-for-r…