Buying genuine Suzuki fork Oil seals may cost slightly more, but you will be buying the correct specification Seal for your machine - As fitted by the Suzuki factory. That is surely worth it just for the peace of mind knowing the best possible product has been used rather than cheaper after-market items that may, or may not be O.K?
Tip! Make sure the fork legs are not overfilled with fluid - This can cause the seals to fail the first time you brake hard!