OP
For fun, I check Hifishark.com every day (one of my automatically opening pages) my default search is usually: Turntable
filtered by 'first seen, new first', see just added items, jump on something.
I put $ limit, Always check above the budget, you want to know what you/they might have if you go a bit above your budget..
You can filter by USA (your country) only, Canada only. I wish I could exclude yahoo listings sometimes, just to shorten the list.
Next, for any friend looking for anything, I change the search, to 'tube preamp' for example