not a big market for DIY projects thats why those timber traders cater for construction. what is your purpose for the timber if you don't have a planer or jointer? seriously postage if going to kill you to send those pieces. the cheap postage i can think off is those lorry that carry all stocks for part delivery. even that cost at least 100 per trip. i assume you meant high end furniture grade timber as majority of producers is using lower grades. my experience is to look for old timber trading co that are at least 30-40 years old. They will have the connection or experience to advice if the old timers are still there.