It's a difficult question..... it is unlikely that it would be considered 'catchy' enough to be brandable so it's always going to be just a keyword / keyphrase type of domain...
Your question is how much 'could' it be worth?
It 'could' be worth up to $2,000 - $3,000 if the market picks up... maybe more?
If you want todays 'trade' value; you'd get $60 to $100 for it from a domainer I expect.... or to a niche market domainer maybe $500
An end user sale could realise $500 to $1,000 but you'd have to put a tonne of work into finding a buyer.....
It's worth keeping for another 2 to 3 years as a speculative investment if you can afford to renew it.
I think $10 - $20 is harsh as a guide but there's not much between $20 & $60 so I won't split hairs; in todays market it's worth whatever someone will give you for it.... so it's up to you to research your market and promote it..