WelcomeCongradulations on the CompG, it's a sweetheart.
Whoa there, that was bluegtp91's masterpiece. I just point people to it because it's one of the best I've seen (and I've seen a few).Thanks to Mystic for his list of "to do's",
As far as vendor issues, the main one I've used is ZZP because they're close to me here in MI so shipping is timely. We've had our disagreements but they've always settled to my satisfaction. A lot of it depends on specific product and circumstances. My wife has sold on e-Bay for a few years ($20k + /year) and online sales can be challenging when it comes to expectations. I try to give the benefit of the doubt becasue I've seen it from both ways.