There's no fee for the release itself. Publishing via standard distribution is covered by your package (Starter, Pro or Label). You can see exactly what your package includes under "My Package" and in the "Price List".
Only the optional extras come with a cost, for example Priority Distribution, Chart Registration, Pre-Release Downloads, Release Protection, Audio Fingerprint or Beatport. You'll see the price right next to each extra and once more in the shopping cart before you confirm. We always issue an invoice, even if the amount is €0.00. You'll then find it in the dashboard under "Invoices".