How Much Do Your Subwoofer(s) Cost Relative to Speakers

My speakers are Revel Ultima Studio 2’s, my subwoofers, are (2) Rythmik F12SE’s. They pair very well,sonically. So, I guess if you are using retail to retail….5:1.
As already mentioned, the Rythmiks are a disproportionate value. I like how they sound but someone else may not. This makes ratio measuring, meaningfully  murky.

My subs only cost around $2,000, but they are eq'ed to only operate below 27hz.  I had to supply my own amps.  

I don't really think the ratio matters.  You should be buying a sub for your room, not what speakers you have.  I had a pair of Sf Sonetto 8s ($7000) and got a T9i ($1300).   It sounded great in my small room, but in my main living room the T9i was inadequate for the room size.  I upgraded to a Rel 212 ($5000) and it's more then enough to pressurize the room.  When I upgraded to Kanta 2 speakers ($11000), it is still more then enough.  

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I guess this thread shows why undersized mini-monitors are so popular--people want an excuse to buy a set of subs.

My sub to main speaker ratio is almost exactly 1 : 1 and I’m using all passive speakers.

The subwoofer amp was about $1,000 more than the mains amplifier.  Add in the required outboard crossover for $4500 as well.