OK, I ordered five $10 zappers several years ago. I had Richard Loyd check and compare one on his oscilloscope and it checked out better in some areas than several models that were going at the time for a hundred + dollars. Richard has since upgraded to a quad zapper that seems to be very much better than the single freq zappers. His comment at that time was this $10 zapper was well worth the money.
As for delivery, I bought them before thay were for sale on eBay. There was a little confusion on the payments system (I had no Pay- Pal) and some delay, but well worth the wait. Naturalman
OOppps!!! I just relooked at the posts and realized that I had bought the zapperplans zappers. The $10 price tricked me a little. I guess I don't know about ones shown in the picture on ebay. Sorry about the confusion.