We keep our prices consistent in sats, which is a challenge with deflationary money..
Converted to $, the cost of an account was less than 1/2 the price a year ago and $1.75 a month 2 years ago although not changing our actual price in sats. Currently our Pro acct is about $5.75 a month which is still competitive considering the features includes.
Of course we will always have the free option.
With that said we strongly support competition and believe it is especially important for nostr to have options!