Nである程度 ― the degree to which one is N


Looking up ある程度 on Weblio [yields a lot of
phrases](http://ejje.weblio.jp/sentence/content/%E3%81%A7%E3%81%82%E3%82%8B%E7%A8%8B%E5%BA%A6)
like

`Xである程度` --> to the extent that something is X

is this to be understood as **`Xである 程度`** or **`X で ある程度`** ？

I don't know if this is a set phrase or not, but what is the function of the で
in this? Is it で、as in です's て-form, or is it connected to である？

If I wanted to say a phrase like

> **The degree to which something is expensive is dependent on the market
> price**

would I say

> **高価である程度は相場に基づいている？**




ある程度 is a common set phrase that means "to a certain extent/amount/degree",
but it's not used in this sense in those ～である程度 examples on Weblio. They are
`[Xである→]程度`.

In general `(na-adjective) + である程度` can be translated as `the degree of
～ness`, but I think `(na-adjective) + である程度` is not common. I feel it's a bit
roundabout. For example, we usually say 危険さの程度, 危険の程度 or even 危険度, instead of
危険である程度. I don't know why Weblio has this many examples of ～である程度 even though
they are far from idiomatic.

Likewise 高価である程度は相場に基づいている sounds weird to me, and I can't help seeing the set
phrase ある程度 in this sentence (i.e, "It's expensive, and is more or less based
on the market price"). Why not simply say 値段の高さは相場に基づいている or even
価格は相場に基づいている?




ある程度 is a common set phrase that means "to a certain extent/amount/degree",
but it's not used in this sense in those ～である程度 examples on Weblio. They are
`[Xである→]程度`.

In general `(na-adjective) + である程度` can be translated as `the degree of
～ness`, but I think `(na-adjective) + である程度` is not common. I feel it's a bit
roundabout. For example, we usually say 危険さの程度, 危険の程度 or even 危険度, instead of
危険である程度. I don't know why Weblio has this many examples of ～である程度 even though
they are far from idiomatic.

Likewise 高価である程度は相場に基づいている sounds weird to me, and I can't help seeing the set
phrase ある程度 in this sentence (i.e, "It's expensive, and is more or less based
on the market price"). Why not simply say 値段の高さは相場に基づいている or even
価格は相場に基づいている?

