As for a more useful answer, I like to work hand in hand with both my suppliers and my customers, keeping everyone in the loop as to what I need, what I have and what I can offer. But I can only do that if you too tell me what you need (like the above question). I put out a monthly wholesale e-mail that lists what is available, how much is around, for how long and also what is up and coming so you can attempt to plan accordingly.
So, if I don't say otherwise, bean supplies are stable and readily available. If you want to be really sure, write and ask me and I am more than happy to work with you to make sure you have what you need - that's my job and what I love doing. If a bean is in limited supply, I will say so, and basically all bets are off how long it will last.
I hope that helps.