Based on this product's specifications, here are some alternatives and similar models
Invoice form booklet Michalczyk i Prokop FAKTURA NETTO A5 (full, multi-copy) MPN 100-3E
Summary description:
Michalczyk i Prokop FAKTURA NETTO A5 is a preprinted invoice form in A5 format designed for net-value billing. This full, multi-copy booklet (MPN 100-3E, EAN 5906858000757) provides duplicate or triplicate copies for record-keeping and customer issuance. Suitable for small businesses, mobile invoicing, and manual accounting where A5-sized, multi-copy invoices are required.