Calibration tape rental?

Is there someone renting calibration tapes? It looks like a decent idea on paper since calibration tapes are very expensive if you run multiple speeds and equalizations and you need them very seldom if your machine holds calibration well (full blown pro master recorders).



I.e. I need for my Otari 1/4" machine:



30 IPS (AES)

15 IPS (NAB)

15 IPS (IEC)

7.5 IPS (NAB)

7.5 IPS (IEC)



MRL Calibration tapes.



To buy those tapes it would cost me nearly thousand bucks!



Anyone rents those instead?

Calibration tape rental?