i'm in the process of building a "thumper" and was interested in the C-more Tactical sight. i went to the C-more web page the saw that the sight was 300$ plus. then i went to ebay and found C-more Tactical sights by G&P for 59.99 or less. now the3 shipping was free and from out of country. just wondering if this was a scam and if anybody had experience/opinions with the tactical sight.