The price was around 13k USD yesterday when I sent a payment of 0.008 BTC and I chose to pay 199 sat/b for the transfer (recommended fee was 350 or something). I got 6 confirmations within eight hours, not that bad compared to a few weeks ago.
Is it because of the price dropping?

I wanted to use an accelerator service after a day, but did not need to.

Always make sure to modify the recommended fee if you can afford to in terms of time, and/or use an accelerator, there are plenty around.