wanted: used ACA maps for ME to CA trip

[greensinger]

If you do a little quick math, you'll realize as I did that buying all of the following maps will cost me almost $150. I'm on a budget (and going ultralight and camping), so any help would be appreciated/vital:

Atlantic Coast - sections 1, 2, 3
TransAmerica - sections 11, 12
Great Rivers South - sections 2, 3
Southern Tier - sections 1, 2, 3, 4, 5

I don't mind doing corrections for errata or anything like that, just having a basic outline to supplement my road maps would be an enormous help.
Many thanks,
Marvin