Searching for Alternative to Uncanny X-Men Vol. 4

So I've recently started collecting a bunch of X-Men omnibuses from Claremont's run and I'm absolutely loving them, can't wait to keep reading.

But while I've gotten copies of UXM Omnis 1-3 and New Mutants vol. 1, I can't seem to find a copy of four anywhere that isn't wildly over priced, even by OOP omni standards. Are there any good alternatives to the omnibus to read those stories aside from just reading them online, or am I out of luck until Marvel randomly greenlights a reprint?