I have created a database on invisionify.com/test-database for you (only for Admins, please log in to reproduce the following bugs):
Required field Storage place never throws an error and saves the 0 value without warning. It is always preset with 0. Even if 0 is emptied, the record is saved with 0. The same for the field Price.
Select sort by and see another bug, where the field Storage Place field is duplicated with sort_cms_custom_database_12.field_50 in the list of fields. (Hint: only reproducible if you set a database to sort by this field in AdminCP)
Try to sort by Price. The sorting order will be 3.00, 11.00, 5.00, and 10.00. It should be 3.00, 5.00, 10.00, 11.00. Or vice versa if descending.
Try to sort by Custom and deselect Special offer in the modal view. You will not be able to deselect. (Hint: only reproducible if you add filters block to the page)
You are free to change the database, add records, edit, delete, remove and add blocks, everything you like. The database is only for Administrators.