How would any genuine people feel if they gave a new lad a go and he asked for a deposit or to be payed in full before he left the farm
Thats it really, in any other scenario, try getting a new supplier to let you have anything without at least a substantial deposit and see how you get on.
Sometimes even see how it goes with people you already know and have done business with. A few years back I asked someone for a quote for some joinery work, not only was the price high, but he wanted 100% paid up front. Not only was his business directly opposite us, but we had given his Dad £3k worth of credit the previous year and had known the family for 30 or so years. His wife even rang us up on the assumption that we would be accepting the quote and asked where our cheque was !!!