Those might be okay for a beginners kit (ie seeing if you like bondage and aren't really going to put up much of a struggle).
I would suggest to upgrade to higher quality, perhaps leather, stuff if you determine you really enjoy such activities.
Few good sites to check out:
Bondage Gear, BDSM Equipment, Sex Toys, BDSM Toys from Jt's Stockroom
The Church of Sinvention - Premium Leather Bondage Restraints and Sex Toys in Stratford, Ontario, Canada - Home
All depends on what kind of bondage you are looking to get into. You could even buy him some nice rope, and print out some rope bondage "how-to's".