Tips on dealing with audio dealers

Where I live we don't have stereo stores that handle high end audio equipment. So, I need some guidance. Can I order a preamp from an audio store and have it shipped to me? I know Mcintosh won't let you do that. Does Audio Research? How about prices? Are they set in stone or negotiable? I don't have a dealer and have never dealt with one so can some of you guys suggest a good one? I am considering the REF6 but for a good price I would consider a 5SE. I have heard there are a number of 5SE's for sale but I haven't run into any yet. Any advice you guys can give me would be helpful and much appreciated.