Stats:

Difficulty:
https://www.bitrawr.com/difficulty-estimator
https://www.coinwarz.com/mining/bitcoin/difficulty-chart
https://insights.braiins.com/en/cost-to-mine/

Hashrate:
https://www.coinwarz.com/mining/bitcoin/hashrate-chart
https://bitinfocharts.com/comparison/hashrate-btc-ema14.html#3y

ASIC Prices:
https://data.hashrateindex.com/rig-index-data

Now in Difficulty epoch 365

A great tool to monitor the progress over the 2,016 block epoch is fork.lol's Difficulty Retarget chart:
https://fork.lol/pow/retarget

And a great Dashboard, overall:
https://timechainstats.com

#bitcoin mining difficulty just jumped by +5.56% to a new ATH, reflecting the ongoing development of the industry.
Trend will almost certainly continue upwards for the foreseeable future ...

https://i.imgur.com/w9juBU1.jpeg
[Larger image]

Mining difficulty still rising is very good. Let's see how this continues after the next halving.