That's just not true, dude. If you actually did trade IR derivatives, you'd never say this. Here, read this:
Thanks for the replies - I understand now. But, the premiums for ITM puts still seem lower than usual to me. So I looked back at the prices on Aug 19 at 16:00, when the September SPY puts had 4 weeks left on them. With SPY at 122.27, the Sep 124 P was 2.50x2.60. VIX was 13.81. Today, with SPY at 121.67, the Oct 124 P, which has 4 weeks left on it, is 2.60x2.70. VIX is 12.85. When SPY was around 121.80 earlier, the put was 2.50x2.60. Is the difference in market volatility (VIX et al) on Aug 19 and today enough to explain the difference?