While in Meirin they had some antique sets which I didnt think were expensive... slightly more than what you paid, (not a lot though) which would give you a good idea of the weight. You may be interested in the 'armourers fair' at Tottori museum held once a year around the September timeframe, where enthusiastic amateur makers get together to show off their latest creations...some are over the top, some more traditional. They are also built to wear (usually to fit the maker) so if you fancy some tips on how to make your own thats the place to go!
One yoroi I had fitted to me at Himeji museum was lighter than I expected, (although it was built for someone half my size) and was surprisingly easy to move around in. The helmet does restrict your cutting though....and theres no way I would wear one with antlers etc. because of this!
I put some photos on my website for a laugh and to remind me never to get conned into wearing one ever again....
Tim Hamilton
Why are you reading this instead of being out training? No excuses accepted...