I do like Pay What You Want releases. It's like getting a free product with a handy tip jar if you like the product. Pretty much risk free shopping if you ask me.
The Lair of Largash the Lurid is a PWYW release from Canister & Grape Wargames. Yeah, I don't get the company name either, but whatever ;)
This is a potentially lethal adventure for a smaller party of 1st level characters. I'm thinking you might be better off using this when the majority of player characters in your campaign are 2nd level.
Even if you don't use the adventure as is, you can always repurpose the 2 dungeon level maps.
Largash the Lurid, scourge of the common folk and self-appointed king beneath the rocky hills, lurks deep within his lair. Who dares enter his realm to unthrone this most evil of monarchs? Can your brave party of adventurers defeat Largash the Lurid and his evil minions once and for all?