Lot of just depends on the vendor's gut and the tone you communicate when you first reach out to them. My first transaction on the road involved a top vendor that said buyers with 0 transaction history must FE. I messaged him, explained I was new. We went back and forth a couple times and he said I could order no FE required. I built a good rep with him, and about 10 or so transactions. Then I slowly branched out. Another thing, vendors talk to each other. So if your going to a vendor for the first time and mention how you've done a lot of business with XYZ vendor.. theres a good chance that vendor will reach out to XYZ. (this is just me assumption.. vendors might be able to verify this takes place).So build good a rep, and you'll be "trustworthy" (enough). Nobody is ever 100% trustworthy, but there's an acceptable level of mitigated risk when a buyer/vendor has what is generally seen as a favorable reputation.The hardest part is the initial few purchases. You run the risk of not being trusted, or being forced to FE (and getting selectively scammed). Glad I'm not a newbie!