Yes, you can pay in three monthly instalments of the same amount using Scalapay or Klarna Pay in 3 option. Whichever service you choose, the first instalment will be charged as soon as the purchase is completed, while the other two instalments will be charged in the following two months. Both ScalaPay and Klarna will notify you about the payment a few days in advance.
Scalapay and Klarna Pay in 3 are completely free services, as long as the instalments are paid within the deadline. In case one or more instalments are not paid within the deadline, you will be charged a late payment fee.