I've been jumping out of canoes all weekend, so haven't had time to respond to this thread, but to those who asked:
The whole document is 119 pages and I just checked - of that, 112 pages are the stat blocks, the rest are introduction, index by CR, sample encounters, cover and OGL text. I also did a brief count of the number of stat blocks before it went out, and I got around 360 before my head went fuzzy.
I'll be putting a small PDF preview on the Creative Conclave site by the end of today so that people can get an idea of the stat content (there is a sample on the product page at Drivethru where you can see the index pages, but not the stats themselves which is something I will have to address).
I haven't seen the WOTC product - are we talking MM4 here? I think the essential nature of the Lazy GM series is simplicity and utility. There are stats for wierd character types (I'm quite fond of both the aquatic goblin were-shark adept and the fire hobgoblin druid) but there are also a lot of grunts of various kinds - goblin warriors level 1-8 extrapolated from the MM version, then goblin warriors 1-8 based around missile combat, fighter versions of the same (with more feats) and so forth. If you're a DM content to wing it as regards stats you could probably (to be honest) go without this book. If you like to feel that you have the rules to back you up, it's more likely your thing.
I tried not to assume too much about 'goblinoid culture' beyond the sketchy details in the MM since that can vary from game to game. You've got the raw nuts and bolts in this book and its up to you whether the hobgoblin clerics (for example) worship Maglubyet, The Mockery, Bane, Takhisis, Sauron, Stalin or whoever, and exactly what role, if any, goblin bards have in your setting.