I just need to be patient.

I have been working on a Winged Liberty dime date set for a few months now and have found the 1918 and 1925 seem to be very difficult to find. I recently bid on a 1925 which was bid up to, what I thought, was a highly unreasonable 50% over the listed numismedia value. Now I understand those values are just general guidelines but I also note that most coins, on Ebay or Teletrade, do not normally exceed those listed values by too much and often are obtainable for quite a bit less.

What is up with those two dates? I know I will find them sooner or later at a price I can afford but this collecting bug makes me very impatient and i find myself checking Ebay twice a day and carefully checking Teletrade when I get their latest auction announcement. They are NOT scarce, they just have cycled out of the market for a time and will return soonest. He Hopes.