When can I buy ramps?

Excuse me, I was wondering if you could provide some clarity on the matter of purchasing ramps. Specifically, I'm eager to know when I might be able to acquire them. Are there any particular times or dates that are more favorable for such a transaction? Additionally, are there any prerequisites or steps I should take in advance to ensure a smooth purchase process? I'm keen on making an informed decision and would greatly appreciate any insights you might have on this matter. Thank you for your time and consideration.