I did a little bit of poking around, and found that Mouser offers these at USD$1.50 each, or
$1.24 in 100-pc quantities. For stateside users, it might be possible to set up a volume
buy and then distribute them -- US mail is $0.60. A 2 oz. Airmail Letter is $1.55 to India,
$1.60 to many places in Western Europe.
Mouser has no minimum order, but they ship UPS or Fedex, and it'll probably be around
$5.00 for the smallest size pkg.
I found some on ebay, but the seller's asking nearly twice the Mouser 100-pc price and he
also charges rapacious shipping.
For what it's worth ...
Jim N6OTQ