No, they're pretty hard to get now days. I'm unsure as to why but I assume it has something to do with Iraq.  If you do find a case of IMPs on ebay, they'll probably be ~$120+ shipped.  The shipping alone can run you $40+.  Best of luck if you do find them though.   
Kinda pricy aren’t they? Sounds like MREs are a better choice. 
MREs cost $50.00 a case and the Army Navy store 3-min (walk) down the road has them for $5.50 each meal bag and I can pick what I want, not get stuck with a random filled case.  
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You can run, but you'll only die tired.