The .de extension is very used in Germany so it is very unlikely the .com will receive any traffic from the .de. Anyway the CPC of the keyword is very high and even if you receive very low traffic it could pay the renewal and gives you some profits. Low $xxx IMHO.
I think that if it has traffic, from people typing in kreditde (without the dot) and it going to your site, then your domain would have a lot of value. But if it doesn't get that kind of traffic, I would say it's only worth reg fee