Hi Lola, I'm in the UK so I can only answer from that perspective. The quality of CB stamps is good - they're unmounted natural rubber and they're deeply enough etched that I get a good impression from them with no foam mount on the back (I use temporary adhesive on the back and stamp on a slightly cushy surface).
Glenda despatches stuff quickly and then I guess the rest is down to the respective postal services. Stuff typically takes about a week or ten days to cross the Atlantic and get where it's going. She's good at replying to e-mail queries if you need help (don't forget there's a five hour time difference though so your answer might not seem "instant").
Funnily enough, I'm just about to use some CB stamps in a crafty project this morning
What's on your wish list?
HTH!