I have to admit, there are some titles in the Old School Cool Bundle of Holding that I never heard of. Others that I've heard of and don't own and some that I feel are well worth the price of admissions on their own.
In the 7.95 Starter Bundle, I own Sharp Swords & Sinister Spells, and it is an excellent Swords & Sorcery OSR ruleset. I've heard of Vagabonds of Dyfed but don't own it, and this is the first I've heard of Pariah and Fallen Justice.
In the Bonus Collection (currently at 19.23), I own both Solar Blades & Cosmic Spells (Sword & Planet with magic) and Dark Streets & Darker Secrets are (modern-day horror) and they are great. I've heard of Hypertellurians but don't own it and again, this is the first I've heard of Dortoka: City on the Sea of Glass. Just because I haven't heard of a title doesn't mean it's not good, it just means it has never reached my radar.