A higher tier `PRO` plan offers 5 GB of file storage at 29.99€ and
tier `STANDARD` plan offers 5 GB more than `PRO` at a lower plan, clearly
this is not beneficial for any business and considered a bug in the 
pricing.

|       | STANDARD 10.99€ |  PRO 29.99€ |
|-------|-----------------|-------------|
|storage|     10 GB       |     5 GB    |