Roon subscription up 25%

My Roon subscription has gone up from $119.88 to $149.88. This represents an increase
of 25% which I find a bit much. Does anyone else feel this increase is unacceptable.

You should have received an email about it in November and there was a looong thread about it since then:

Plus a complaint thread also since then

In the spirit of your question, yes it is a significant increase, however it is one of the only increases that Roon has made. If you appreciate the positives that the software brings and you can afford it, keep paying. However, if it no longer meets your needs at the cost price, then it may be time to look for a more affordable alternative.