I will not demand money from anyone. I will try to sell on an eBay-style site. So people can trust me with this way. Miner cost will be 100-150$ .
I advise you'd send some few first items to known and reputed miners, so they can prove that the miners actually mine as expected. This should grow your reputation.
Selling in batches and handling the funds through reputed escrows may also be a good idea, since you are newbie / nobody knows you yet.
Edit: if you sell on eBay or similar established store, then you can ignore my second line.