Prices of kagums will vary somewhat with the master. Each master is allowed to add whatever markup he feels is fair to his cost for the sword. So a kagum might be $125, or it might be $180. In any case you can only get federation kagums through the federation, as they are of a special design just for the federation, and feature WHDGDF guards.
Jingums vary even more in price, as the same rule applies; a master can add whatever markup he regards as fair to his cost. Again, the only place you can get a federation jingum is through the federation, and federation jingums have WHDGDF logos incorporated into the guard, fittings and saya.
The lowest I have seen the cheapest WHDGDF jingum (bamboo/flower model) go for here is $1200; the most expensive (with lots of bling) is over $2500. We have not been able to determine if there is in fact any functional difference in the blades of the $1200 model vs. the $2500 model. However, using MAS swords as a reference point, the most expensive WHDGDF jingum adds about $1000 of bling compared to the basic model, so it's possible that there isn't in fact a significant difference in the two blades, but there might be. We're not sure.
In any case, a jingum's primary differences from most katanas i have had the chance to cut with were (1) jingums do not have grooves; (2) jingums always have the handle held on by one peg and a bolt (the end cap is screwed on) for lots more security; (3) jingums are differentially hardened (real hamon), which means they have a hard, very sharp, but more fragile edge than a through hardened sword (though many katanas are differentially hardened as well); (4) jingums are generally, at least around here, only available in one length (28 inches)
If you are at a WHDGDF cutting event, in most cases they can see from across the room whether you are using a federation sword. Sometimes they enforce the no-non-federation sword rule, sometimes they don't.
Jingums vary even more in price, as the same rule applies; a master can add whatever markup he regards as fair to his cost. Again, the only place you can get a federation jingum is through the federation, and federation jingums have WHDGDF logos incorporated into the guard, fittings and saya.
The lowest I have seen the cheapest WHDGDF jingum (bamboo/flower model) go for here is $1200; the most expensive (with lots of bling) is over $2500. We have not been able to determine if there is in fact any functional difference in the blades of the $1200 model vs. the $2500 model. However, using MAS swords as a reference point, the most expensive WHDGDF jingum adds about $1000 of bling compared to the basic model, so it's possible that there isn't in fact a significant difference in the two blades, but there might be. We're not sure.
In any case, a jingum's primary differences from most katanas i have had the chance to cut with were (1) jingums do not have grooves; (2) jingums always have the handle held on by one peg and a bolt (the end cap is screwed on) for lots more security; (3) jingums are differentially hardened (real hamon), which means they have a hard, very sharp, but more fragile edge than a through hardened sword (though many katanas are differentially hardened as well); (4) jingums are generally, at least around here, only available in one length (28 inches)
If you are at a WHDGDF cutting event, in most cases they can see from across the room whether you are using a federation sword. Sometimes they enforce the no-non-federation sword rule, sometimes they don't.