I guess I'd shoot for at least 20k. Probably quite a bit more.
One-syllable, short .coms (especially ones that are homophones of good keywords (not that they have to be used for things related to that keyword (like care).. just nice to be related to a familiar word, I think, rather than something like zare or jare).) are worth a lot more than an above-average brandable that can sell on BrandBucket for at least 4k.
tyme.com 40,000 USD 2013-08-28 Uniregistry
tyme.com 3,005 USD 2006-08-01 SnapNames
quire.com 50,000 USD 2015-03-19 Uniregistry
purch.com 45,000 USD 2014-04-16 Uniregistry
kurly.com 30,000 USD 2015-04-10 Uniregistry
surve.com 25,000 USD 2015-02-08 Uniregistry
There are probably several more good sales like this.
Out of curiosity, checked different spellings for "care" in .com
care
cair
caire
kare
kair
kaire
All are in use except yours.