To be clear I'm not suggesting that we buy every thing that anyone might ever want to sell. It's just that if we are going to use orca profits to buy the things we need it makes sense to me that we buy them from corp members rather than some random in jita.
It saves everyone trucking over to Jita to but and/or sell as well as saving people the nightmare of the 0.01 game.
But we if we're saying we need the hulls for a mining fleet then people may be able to make the t1/t2 hulls and components.
If we could put something together showing ideal fits then a PCGE shopping list should be reasonably easy to compile, anything then people can't make we can then buy if need be. If we also put the skills needed to get to the t2 fits it gives people low on skills something to aim for if they want to up their participation in any of the ops.