Dear Truth Seeker,
If you are interested in authentic books on Indian philosophy,Vedanta and Hindu scriptures, get books from these sources. They publish high quality books at low cost.
1 Sri Ramakrishna Math --Mylapore ,Chennai,India
2 Advaita Ashrama ---Kolkotha
3 Divine Life Society , PO Sivananda nagar, Tehri garhwal,India
4 Central Chinmaya Mission Trust,[CCMT] Powai, Mumbai
5 Sri Ramanasramam.Tiruvannamalai,Tamil Nadu,India,606 603
Check their websites,you can do online ordering also.
Collect your own library of books at low cost!