The program is brought to you by Royal Selangor, a well known Malaysian company specializing in making pewter souvenir and handicraft items. Actually, their ranges of pewter products are more than that. You can check that one out on your own. Take note that their affiliate application rules and requirements are quite strict and it would not be easy for some to gain their approval in the first place.
Basically, you can earn up to 10% on referral fees but they do have some premium products that could give you more. The only thing that bothers me is the fact that each referral that we referred to them is only good for three months. So, you can only earn something in the first three months. Any subsequent purchases made by referrals beyond that three months period would not be credited back to their affiliates. :(
The program is worth checking nonetheless. Give it a shot!