Currently none. You may create an arbitrary number of user accounts, articles and article groups. There is no time limit either.
This is, however, a tentative arrangement. Should it turn out that this freedom is abused, 7fach GmbH will be forced to change it.
The easiest and safest way is by direct debit (SEPA authorisation). Or, you may transfer the money to our bank account.
If is is inconvenient or too expensive for you (e.g. because you are not living in the European Union), we also accept Bitcoin (BTC) payments. See also bitcoin.org and bitcoin.de.
Please note that if the direct debit transaction fails - or payments are delayed more than 4 weeks - your account will be turned off and the database on our server will be purged. Though you may then file a new registration, you will have to enter you data again. Possible debit note return expenses will be charged.
Generally, yes. This has to be done only once, though, and should be done quickly if the stock list is not too large. If desired, we offer to import your articles. Prices upon request.