I've got this information from Namepros.com community (posted by JimboJimbo) and would like to share to our readers where you can register .TV domain names and managed at low cost.

Here's the list and their pricing for .TV domain extension.

Enom.tv
Registration: $24.95
Renewal: $24.95
Transfer: $24.95

EnomCentral.com
Registration: $49.95
Renewal: $49.95
Transfer: $49.95

GoDaddy.com
Registration: $39.99
Renewal: $39.99
Transfer: $29.99

Namecheap.com
Registration: $17.99
Renewal: $25.00
Transfer: $24.99

Name.com
Registration: $35.00
Renewal: $35.00
Transfer: $35.00

Dynadot.com
Registration: $34.99
Renewal: $34.99
Transfer: $34.99

Mydomain.com
Registration: $29.99
Renewal: $50.00
Transfer: $50.00

NeedName.com
Registration: $23.95
Renewal: $23.95
Transfer: $23.95

Please note that you can easily push your domain names (any extension) from Enom.TV, EnomCentral.com and NeedName.com as they are in the same database network.

If you would like to know more about .TV domain name extension. I recommend that you visit NamePros.com community.

Enjoy.