Who is a profesional ebay sniper who can find the best bargains on ebay and turn them over for profit? Maybe you can share your technique, and tell us what you look for and how you ferret out those under priced gems that can be later marketed.
You called? My problem is that I never part with any of my conquests - but when I do, I lose money on every sale but make up for it in volume . . . . Z
Good luck with that! I don't mean to sound like a money-grubbing profiteer, as I'm in this for more than the profit. I could probably make more on the principal in the stock market, but I enjoy the coins, the people and the pursuit. Why would those who have spent so many years learning . . . learning what works and what doesn't, what people want and what they don't, how to grade from photos and how not to, what the coins are worth and what they're not worth, which coins will sell well and which will become deadwood . . . why should someone divulge that information in one fell swoop, let alone divulge it at all? Why should they pay the dues of untold hours of effort, repeated disappointment, and financial bruisings, and then provide you a shortcut that will undermine their return on those investments? Unless that perspective had never occurred to you, why would you be so bold as to even ask the question?
Maybe you should spend more time studying numismatics and the market and less time asking for handouts.
Might not want to waste the good stuff when just a slug would do. Nah. Gotta show off sapper skills. The bigger the boom, the better the bang.
I think you'd do better bookmarking some searches then checking frequently for sellers that put too low of a price on a buy-it-now.
Then, there are sniping tool apps, there's typo search tools apps for items misspelled in titles that won't necessarily turn up in a basic search, then there's ways of looking for items listed with low BINs that you can take advantage of, you have to get comfortable with the search functions of the website and how to use it to search effectively, and research effectively. None of this matters unless you know what you are doing, what a good deal is vs. too good to be true, and what you could resell it for and make a profit or what you'll wind up losing on, which takes experience, and trial and error. as far as sniping tools, some are better than others. it's a trial and error until you find one that does what you want it to do for you, and doesn't leave you hanging, I think most folks will keep the specific one they use a secret for a competitive edge. you gotta do your homework and actually look on ebay for a start though, there's no easy way about it, like riding a bu=ike you are going to fall down, read on there in the ebay community about all the scams and questions from buyers and sellers. you need to learn how it all works specifically the searching functions. the book ebay for dummies, as odd as the title, is kind of useful or at least it was for me in the early 2000s for understanding the basics. i generalize because it all is general, it takes experience and knowledge to be successful, even with all the tools and tricks at your disposal for an advantage. you need to still learn what is a scam, and how to identify items to go after. learning is a win/loss ratio, but if you don't learn, you never cut out the loses and take the lead with wins.
It would not undermine there efforts and the reason would be because that is how civilization works. We spend years and a lifetime accumulating knowledge and share it with other.
I agree with John Burgess do your homework, maybe pick a denomination of your choice buy coin books, research the years of the denomination you have picked for varieties, high mint state grades. I think its more about the knowledge you gain as you go through your collecting years once you feel comfortable with your denomination you have chosen move onto another denomination and repeat what you have learned.
Set your price, stick to it, and walk away if you can not buy for the price you set. What is the point of joining in a useless bid one more time exercise? Because somebody else thinks it is worth more? So? Because you really wanted it, and a "sniper" got it? So? Did you set your price accordingly and aggressively to your desire and limit in the first place? Exactly how do you know the sniper got a "good deal"? If you want to snipe coins to build a collection, sniping is not ever going to work. If you want to snipe for profit and flipping, your money is better spent with Robin Hood. Why not run a small ad in your local newspaper, for buying and selling coins? You would be very surprised at the responses and enjoyment. Send out a one page letter mailing to a targeted zip, like a retirement community, or rural community. You can accomplish the same thrill as the sniping process, with a lot less stress and worry about whether or not you paid more than you should have. I never did understand the sniping game. To me, it is silly. It is not fun, it is not a relaxing pastime and it is not worth my time and effort to do so.