I don't understand how to read free pdf or how to buy the book

I want to purchase Bhagavadaradhana Vidhi.But I am not getting purchase page.Kindly help me.

I already rented this book , can i repurchase and redownload it ? Please reply

Chirudivvelu kavitha samputi book kavali sir

There is no option to download the purchased books. Can some one please check and respond