OK so I'm pretty new to the Hobby. I purchased a Minelab X-Terra 505 about three weeks ago. I have had some success in finding coins and junk. The reason I think I made a mistake is,I live near the Ocean. So to detect I must go to the beach or just hit the parks. And since I'm near the Ocean no sense in not going where the people hang out. When i get near the Ocean I'm find in the dry sand but as soon as I get into the wet stuff I can't GB to save my life. I wish now I would have gone with the 705 and maybe I wouldn't be writing this. It's totally on me. I will say I did do research on detectors but not near enough. i went to the dealer and of course I wanted and had to have then. The dealer did try and explain that 705 was better and me trying to save a little bit of money didn't think it all over. I'm all about saving money,but sometimes it does pay to spend a little more to get what is best. If I was trying to sell the 505 what is an amount I can expect to get for it? I think the 705 is the one I will get and should have purchased at the beginning,or maybe a different brand altogether. Maybe a waterproof one would have been what I need,I'm not sure what I'm saying here really lol. Pretty much if you are new to the Hobby don't buy because you just wanna do what you seen on youtube or something.Do your research and make sure you get the right detector for your needs. If you don't you may be posting something like this.