I bought my Gen 2 new from Epps, there was no waiting list and the price was the best I had seen at the time.
Epps, P&D, Wanstalls, Frontier, Wolverine, and Lanz, are the retailers I know of that carry KelTec. There may be more now. Just need to check their sites regularly and watch for new shipments.
Buying used still seems to be pointless since most people want the same price as new but if you want one now it may be the only option.
I love mine and can't wait to get it out hunting this fall. Accuracy is acceptable and reliability has been 100% so far (only a couple hundred rounds so far though).
Good luck