While not digital, websites like BookChor or OLX sell old physical copies for as low as ₹150. You can scan specific chapters for personal use.
Laxmikanth gives you the static skeleton. Read newspapers (The Hindu/IE) to add muscle. For example: indian polity by laxmikant pdf google drive
You're looking for a detailed review of "Indian Polity by Laxmikant" in PDF format, specifically on Google Drive. Here's what I found: While not digital, websites like BookChor or OLX
If you are struggling to secure a copy, consider these alternatives that are legally free: While not digital