KusKus gift certificates are electronic and intangible. After purchase the Gift certificate will be sent to an e-mail address that was provided during registration. They have a neat design and can be given away as a present, just choose either printing it out yourself and present your friends with it or just e-mail it to them.
After using the Gift certificate code once it becomes invalid irrespective of residual amount balance left after shopping. There is also no top-up option.
The 35 LVL worth certificate allows purchasing one pair of home boots and covers delivery costs. The 60 LVL worth certificate would cover the purchasing and delivery costs of a combination of 2-3 different price category home boot pairs.