From last Mabar I got a +5 CON tome.
Since Supreme +4 tomes are now on sale, I tried to buy this but it's unavailable. So does having a single +5 tome exclude you from buying the Supreme +4 tome bundle for all stats? If that's truly working as intended it would suck bigtime because buying all the +4 tomes separately costs way more points that buying them bundled (not to mention they aren't on sale separately).
5x +4 tome (1195 TP each) = 5975 TP
1x Supreme +4 tome bundle = 3371 TP