I have been operating my business for over a month now on Bonanza. I have used their advertising tools and upgraded to a platinum membership.
I have grossed over 2k in profit and I have delivered all the items that I have sold. No matter where you shop or setup your store you will always risk being ripped off. However there are plenty of legitimate sellers that communicate quickly and get your items delivered as promised. Bonanza may not be as big as Ebay but I can guarantee there are more Scammers per user on Ebay than on Bonanza.
The only complaint is that the fee base is pretty high when using Advertising, but I find the ease of use of the website to make up for it.
Reason of review: Good customer service.