TL;DR
No, a company is never set up for €0: the "€0" refers to the online service's own fee. Legal fees are still payable, namely €223.56 incl. VAT for a SASU and €291.96 incl. VAT for a SAS in mainland France, at current rates. 
Service-public
What you still pay with a €0 offer
| Item | SASU | SAS | EURL | SARL |
|---|---|---|---|---|
| Greffe + beneficial owners | €53.16 | €53.16 | €53.16 | €53.16 |
| Legal notice incl. VAT | €170.40 | €238.80 | €148.80 | €177.60 |
| Total | €223.56 | €291.96 | €201.96 | €230.76 |
What a €0 offer often does not include
- A check of your application by a formalities specialist: you file it yourself or it goes out as it is. Service-public
- A guaranteed turnaround time.
- Corrections if the greffe asks for regularisation.
At LegalRapide, the Essentiel offer is €0 excl. VAT; the check and guaranteed filing within 24 business hours come with the Rapide plan (€149 excl. VAT).
Also check
A "free" formation may be conditional on a subscription (accounting, business account): count its cost over 12 months. See the comparison of services.
Written by Razvan Toma, founder of LegalRapide. How we check our figures · LinkedIn