I used to sell Suarti-type pieces and can honestly say the QVC mark-up is astronomical. I was selling mine at less than half the price of the Suarti pieces and still made 150-200%.
If you look around in little independents, ladies, I'm sure you'll find some beautiful bargains and support the little people, too. I was a newsagent/corner shop/mini-convenience-type store, so it's always worth checking in these places. If they sell anything like this, they'll definitely be cheaper than a jeweller.
I used to get my stock from a wholesaler who'd go to Bali and import directly (hence the cheap prices). I have no idea what he was getting them for but I rarely paid more than £5 per piece. I have no idea what prices he charges no as I no longer own a shop, but if anyone's interested, he's based in the basement of a jewellers in Barry (I can't remember the name, but they were on the left-hand side going down the street). He only used to sell in lots of £100 or more, but if you love Suarti, you'll love his pieces. He also sells beautiful amber stuff.