10% buyers fee, move the decimal, 15% move the decimal plus half, 20% move the decimal and double it.
Thanks for all of the valuable intel guys. I am aware that your always paying a fee when buying from anywhere and anyone. Since I began collecting in 2007 I have done alot of studying and reading that has helped me eminsley(along with CT of course). I have learned and feel like the internet AH and coin sites(not Ebay) are my next step in accquiring many of the coins I sill want. The mechanics and figuring out the true price from the buyers end is where I will be coming into the picture so thanks again. Just trying to get that warm fuzzy feeling before I jump in to a real auction.
I just figure out my maximum bid (including the 15% buyer's premium) and multiply that by 87%. Example: I am willing to pay $115, total. If I multiply that by 87% (or .87), I get $100 hammer as my bid.
Six of one. Half dozen of another. 1 / 1.15 = 0.869 so multiplying by 0.87 is about the same as dividing by 1.15.
Multiplying by .87 requires one less numerical entry than dividing by 1.15, so it is much more efficent.