You post your product(s) to sell and include a price. You choose whether you will pay shipping or the purchaser will do that – it is easy to calculate using zip codes on the USPS site. You also decide whether you want to accept checks, money orders, or online payments such as Paypal. All information should be included. You also list an email where those interested may reach you.
All transactions are done privately between the two of you. You may, if the the list is long, update periodically on the same thread. SCM is gracious about letting us sell curriculum but has asked that we not choke the forum with multiple for sell threads. 🙂