Steve,
You have been buying and selling swords for 7 years and you couldn't find any other place than Ebay?...(I'm sorry but this doesn't sound right)...Did you try Google? You'll find hundreds of dealers in Japan if you just google them..
I've read your posts but your questions and comments are very basic.."Good hamon, weak hamon, wild hamon, is this good smith etc.." Sorry but 7 years in the business and you sound like you have no idea..
Please listen to what John have said..buy some books..watch some documentaries on youtube...You'll also find some great resources online..
https://studyingjapaneseswords.com/