TEC are still available but not as readily, I have quite a few sets of 1-4 and some 2-3 and I usually sell them to the UK members if they can't find any, I don't trust Daichi at all, in fact I salvaged a really good set of 2-3 points from an old points plate the other week, faces were still ok so I dressed them down only to find the circlip missing and the arm was sticking a little so took them apart, I wasn't aware that the arm is bushed on TEC points, what looks to be a phosphor bronze bush sits between the arm and the pivot pin, inferior points seem to think it's ok just to run them in the bakolite stuff the arm is made of and then wonder why they go out of adjustment so easily. I took a circlip off a ruined set, so now I have another pair ready for use.
I'll keep looking, tried Ebay, nothing worldwide and Yamiya have them but still around $29 a set.