Thank you Irene for a prompt response. I have only looked at the list of suppliers you gave kind of briefly but it seems like a great list.
I looked through the directory to see if I could find prescription glasses but did not find any. At least from a high level search. Perhaps prescription glasses are not a popular resell item but it would be beneficial to others, looking for such items, if these suppliers were added to the directory.
I will look into the list further but if anyone has any suggestions on a particular supplier let us know.