Ask him to pay a down payment through Paypal and set specific goals for the trial. That way you both are protected. If you don't perform to the level you agreed they can request a refund through Paypal and get their money back. If you DO perform based on your agreement, even if they try to file a false refund through Paypal you will be able to prove you provided the service you promised and keep their deposit.
I've been burned before too. But if they are serious and really want your service they should be willing to pay a deposit. Make sure that their deposit is enough to cover your cost so you don't lose anything
Yeah try mentioning Paypal it should make. him feel more comfortable. Paypal is very buyer friendly and protective of the buyer. So make sure you can prove the terms of your agreement in case he does file a claim with Paypal so you can prove you did everything you guys agreed toi try to ask him if we can meet this agreement together and get results but not without having at least in advanced an amount to keep in PayPal Account...
If a client asks for a trial order and does not want to pay advance what can I do?
A Residential proxy is expensive and in 5 days you can't do anything if you need to warm up...
What should i have to do?