We do 3D logos but the price is too small
Logo work normally gets done in a package of 10 sizes
Not sure if we can do just one minor file, the app size.
Usually a business needs the app to match 9 other sized files
Website Logo,
Ad banner
Avatars for twitter and fb
Headers for WP, twitter and fb, youtube
G+ Image
Etc
But we do take BTC
You might want to consider a package like ours
I can probably get you a coupon to take some off
But Logos need 10 or more files today, not just an app file
Take a look and I can talk to the graphic arts guys and see if they want to do a 1 off, just an app size
http://pageone.biz/product/3d-text-logos/