Yes. wget and grep/find are wonderful :-)
Here is an explanation of what MyNumber regard as platinum, gold and silver numbers. I do not know if this is an industry-wide classification or just MyNumber's. I still cannot see what makes these numbers special even after reading the explanation.
The numbers on offer are not great. A silver number I found 04888 ABCAB (but has been purchased so is not listed above) is actually better than all the other gold numbers (except mine 04888 XXABC).
Did you scrap all the pages to find out where the treasure is? :)
Honestly am I the only one who cannot decipher the difference between gold and silver numbers, and what's golden and silvery about them?