AFCI for Put

It looks like AFCI is a great buy for put. The price rose for the past three days with lackluster volume. MACD and STO are decreasing. The phase 1 and phase 2 scores are pretty bad. Price should decrease further. I'm holding on buying the stock b/c I'm afraid it will rise before it starts to correct (to the low). One thing that I'd like to clarify is if it does arise, does it mean the bid and ask prices will become cheaper? Similarly, if it goes lower, the bid and ask prices will become more expensive? Let's take a look at the $17.5 strike price and see what it looks like tomorrow.

Bid 1.30, Ask 1.45