Why are there no 6m or 70cm antennas in the shop?

6 Meter is not necessary, because not active yet.

70 cm / 2 meters are working over repeaters only (VHF/UHF), maybe that simulates the IDC antenna on HamSphere, I don't know.
But there is nothing what you could make "better" with another antenna.

73 and good DX from Jörg :-)
JO31ok
Bochum / Germany