Swedish: öppet köp vs bytesrätt

[Perseas]

Hello,

A small dialogue between a customer and a shop assistant:
-Har ni öppet köp?
-Självklart. Vi har öppet köp i två veckor och bytesrätt i 30 dagar.

What is the difference between "öpet köp" and "bytesrätt"?
I thought that both mean "the right to exchange", but it seems that this not the case.
Thank you in advance.

 

[sb_stefan]

"Öppet köp" means that you can get your money back. "Bytesrätt" means that you can exchange it for another product in the shop.

 

[Perseas]

Many thanks!