Question about digitec connect 12-month basic mobile subscription voucher

I think you pay 180.- for one year, then you can use the subscription for one year, i.e. monthly 3 GB internet at home and 1gb abroad, instead of having a Swisscom subscription that you have to pay monthly, you pay 180.- for one year. I hope I have written it understandably

Bandito82, you are not buying a subscription for CHF 180 (instead of 300), but a voucher for 12 months, which you redeem at some point later. At the time of redemption, the voucher is already paid for, as it was bought beforehand.