Even if people don't really buy the standard items, you can still sell them. I'm basically talking about selling them immediately (not putting up a sell order), at whatever the current going price is. Whether its a player based or infinite station based sell.

For instance, I can go and sell a standard small mining module on the market now. Would it be more economical to recycle it or sell it? From my initial observations, there is lots of wasteage when recycling, so it appears not to be worth it, but does this change substantially at higher levels?

When I get a chance I might do some basic math on a few simple items, but just curious if there is a general consensus. Like "only recycle crap you can't sell", etc.