Empty private keys worth $17 is a very good deal indeed. The only problem is that many users who have the old keys that you require probably do not need the funds as they got in on Bitcoin early. Anyway, good luck with your business!
Three packs of smokes for one little ole empty private key... If you build it... the smokers will come.
Or 3 free hits of LSD.
Or 2 free grams of high grade pot.
or 1 free point of smack.
or a free roxy 10mg, 5mg roxy and a mcdonalds cheese burger.
or you could put it in your church's donation pot!
The possibility with bitcoins are endless.
Hell you could gamble it into $100,000 if hit a good reverse martingale or whatever... it's
free.