Hardback collections reprinting early Justice League of America stories starting from The Brave and the Bold #28 - in a similar manner to Justice League of America Archives. It is just that the Omnibus editions have more pages and, therefore, more stories in one volume - and are also more expensive.
The full list of collections is:
The Justice League of America Omnibus Volume One: (The Brave and the Bold #28-30, Justice League of America #1-30)
The Justice League of America Omnibus: The Silver Age Omnibus Volume 2 (Justice League of America #31-76, Mystery in Space #75)
|Total £||1.55||5.85||10.15||25.05||53.25||98.60||147.00||171.00||199.00||Total title value in pounds in UK markets|
|Total $||2.00||7.40||12.80||31.40||66.60||123.00||184.00||214.00||249.00||Total title value in dollars in US markets|
Note: some PR issues may have no value. Selected issues in FN, VF or VF/NM may not exist in some titles.