almost all cream manufacturers have creams available in sample size. Truefitt and Hill has a wonderful sample set they sell on their website; enter the code BB09 at checkout and save 20%. Trumpers also has an incredible sample kit. You can go to their website and order it.
Although I haven't tried any TOBS creams, they apparently have samples, as well.
This is word-for-word something I posted the other day in a different thread:
"Emails-
Edwin Jagger (the cream I would personally suggest in my limited knowledge): <[email protected]> Will send you 1 pretty generous cream sample
AOS: <[email protected]> Sent me two boxes including SC,PS oil, and ASB (unscented)
(There is a sample request email page here but these are the only two that would accommodate me.
Or you can buy inexpensive samples: The Shave Den (your best bet I think. $20USD will get you maybe a dozen creams, and they have almost everything mentioned in this thread up to this point) Edwin Jagger Trumpers (if you haven't tried them all yet =) Jopo (really great B&Ber)