Go on an auction-spree with a good product.
You should hit your $3,000 or 100 sold limit with 98% postive feedbacks, therefore, you must provide an excellent PRODUCT with the standard PACKAGING at the right PRICE.
It's important to promote your product properly, usually we obtain the product at a very good cost price but just completely fail to market it properly.
There are 4-5 P's of marketing ( Product, packaging, price, place and promotion )
All P's should integrate well with each other, if anyone is missing or not working properly sooner or later you are asking for trouble. Put your customer first, make them feel they have got the perfect product and excellent customer service, It's not like you always have to have the cheapest product to make a profit.