There is being to cheap with dropshipping though if you sell to the customer and they are not happy and return it you are atleast liable for the first lot of postage as even if your not selling on ebay most shops offer free postage as customers may buy more than 1 item meaning you would lose out so alot of shops that sell dropshipped goods include there p&p so you have to figure this into your prices how many would you have to sell to make the return back also there are charge cakcs ect and you are liable not you dropshipper.
adoos is ok to advertise on and vivastreet also word of mouth goes along way i have lots of return customers and some with addresses right by some other customers so i usually know when i have been recommended well when i recoginise a street or area i go look through my records lol