What are permanent stamps actually worth?

[luknis_0]

I need some clarification on what permanent stamps are actually worth, because every answer I’ve found is as clear as mud.

So, currently, P stamps are $0.90 in booklets/coils, and $1.05 individually.

I am aware that they are good to send a regular >30g letter, but,

When I use them on oversized lettermail, what is their value? $0.90 or $1.05? If I’m mailing oversized lettermail that is less than 100g, ($1.90), do I need 2 permanent stamps or 3?

Thank you.

[femmefan1946]

On January 13, 2020, the price to mail a letter domestically that weighs less than 30 grams ROSE to 92c.

All older P stamps are now worth 92c.

If you want to you could use a P stamp, or two 46c stamps, or a 60c stamp and a 32c stamp.

If you buy one P stamp there will be a service charge added to the cost of the single stamp.

If you buy a booklet of P stamps, you will pay $9.20 plus sales taxes.

@kh-leslie    This is pretty much a ZOMBIE THREAD  by now, since the basic information (the value of a P stamp) has changed.