usually, the "BIG" transaction occur between well known individuals, and I suspect payment is made post con, or on time payments, etc...I walked by Harely's booth and he just handed me 2 books he got for me and said for me to pay him later, as I didn't have my check book on me (most prefer checks/cash to avoid the CC fees)..
if you are a non known buyer, cash or credit card would likely be ok....check if you know the dealer and have done business with them enough to establish reporte...
just my
gator